pulse

Английский Язык - Турецкий язык

Определение pulse в Английский Язык Турецкий язык словарь

Hastanın artık bir nabız atışı yok. - The patient doesn't have a pulse anymore.

Vücut ısısı yükseliyor, nabız yükseliyor... Onun oksijen eksikliği durumu var. - Body temperature rising, pulse rising ... he's in a state of oxygen deficiency.

{i} sinyal

{i} genel eğilim

darbe,v.nabız gibi at: n.sinyal

radyo sinyali

(Askeri) pals

vuru

{f} atmak

(Denizbilim) atış

Hastanın artık bir nabız atışı yok. - The patient doesn't have a pulse anymore.

bir an

(Bilgisayar) sıfırla

(Bilgisayar) darbeli arama

(Askeri) sadme

(İnşaat) akım darbesi

bakliyat

2016 birleşmiş milletler genel kurulu tarafından uluslararası bakliyat yılı ilan edildi. - 2016 was declared the International Year of Pulses by the United Nations General Assembly.

2016 uluslararası bakliyat yılıdır. - 2016 is the International Year of Pulses.

nabız gibi atmak

{f} nabız gibi at

çarpmak

nabız atışı

Hastanın artık bir nabız atışı yok. - The patient doesn't have a pulse anymore.

darbe

Atım

çarp

{f} titremek

(Tıp) Nabız, pulsus

{i} baklagiller

{i} eğilim

{i} vuruş [müz.]

{f} titreşmek

nabız atmak

{f} (su) gürül gürül akmak

(Askeri) PALS SÜRESİ; MÜDDETİ: Radarlarda pals süresinin mikro saniye olarak ifadesidir. Bu radar transmisyonlarını ihtiva eden palsların herbirinin yayın süresidir. Aynı zamanda pals uzunluğu ve pals genişliği olarak adlandırılmaktadır

{i} niyet

{f} (kan) kalp atışlarıyla ahenkli bir şekilde (damarlarda) dolaşmak

{i} titreşim

(Gıda) vurgu

(Bilgisayar) vurum gecikmesi

pulse dial

(Bilgisayar) darbeli arama

pulse dialing

(Bilgisayar) darbeli arama

pulse duration

(Askeri) pals müddeti

pulse duration

(Askeri) pals süresi

pulse modulation

vurum kiplenimi

pulse rise time

(Bilgisayar) vurum yükselme süresi

pulse rise time

(Bilgisayar,Teknik) darbe yükselme süresi

pulse signalling

darbelerle işaretleşme

pulse triggering

(Bilgisayar) vurum tetikleme

pulse width

(Otomotiv) sinyal genişliği

pulse height analyzer

bir dakikadaki nabız sayısı

pulse repetition frequency

darbe genliği, atım genliği

(Tıp, İlaç) Kalbin düzensiz atımına bağlı olan nabız eksikliği, atışlar birbirine çok yakın aralıklarla olur ve kalp kan pompalayamaz

pulse discriminator

darbe diskriminatörü

pulse fall time

puls düşme süresi, darbe düşme zamanı

pulse forming line

darbe oluşturan hat

pulse height analyzer

nabizölçer

pulse ionization chamber

darbe iyonizasyon odası

pulse jet engine

(Teknoloji) PALSJET: Tepki ile harekete geçen, kompresörsüz ve türbinsiz bir motor. Önde, açılıp kapanan kanatçıklarla teçhiz edilmiş olup, devamlı olmaktan ziyade periyodik seri itişler meydana getirecek şekilde havayı içeri çeker

(Otomotiv) titreşimli hava

pulse air

(Otomotiv) sinyal havası

pulse air pipe

(Otomotiv) sinyal hava borusu

pulse air pipe

(Otomotiv) titreşimli hava borusu

pulse air rail

(Otomotiv) titreşimli hava hattı

pulse air rail

(Otomotiv) sinyal havası manifoldu

pulse air system

(Otomotiv) sinyal havası sistemi

pulse air system

(Otomotiv) titreşimli hava sistemi

pulse air unit

(Otomotiv) titreşimli hava ünitesi

pulse air unit

(Otomotiv) sinyal havası ünitesi

pulse air valve

(Otomotiv) titreşimli hava valfi

pulse air valve

(Otomotiv) sinyal havası valfi

pulse amlifier

(Nükleer Bilimler) darbe yükselticisi

pulse amplifier

darbe kuvvetlendirici

pulse amplifier

(Bilgisayar,Teknik) darbe yükselteci

pulse amplifier

darbe yukselteci

pulse amplitude

(Nükleer Bilimler) darbe genliği

pulse amplitude modulation

(Askeri) pals genlik modülasyonu

(Mekanik) darbe yeteneği

pulse code modulation

(PCM) Atım Modu Modülasyonu

pulse code modulation

(Askeri) pals kod modülasyonu

darbe (vurum) sonumlenmesi

pulse decay

(Bilgisayar) vurum sönümlenmesi

pulse delay

darbe (vurum) gecikmesi

pulse duation

(Denizbilim) atış süresi

pulse duration

darbe süresi

pulse duration modulation

(PDM) darbe (vurum) sure kiplenimi

pulse echo method

(Nükleer Bilimler) darbe-yankı yöntemi

pulse energy

(Nükleer Bilimler) darbe enerjisi

(Tıp) nabız frekansı

pulse height discriminator

(Nükleer Bilimler) ayırıcı, puls-yüksekliği

pulse height selector

(Nükleer Bilimler) seçici, puls yüksekliği

pulse interleaving

darbe (vurum) serpistirme

pulse jet

(Askeri) pals jet

pulse length

(Nükleer Bilimler) darbe uzunluğu

pulse modulation

(PM) darbe (vurum) kiplenimi

(Tıp) puls oksimetre

pulse period

(Otomotiv) titreşim periyodu

pulse period

(Otomotiv) sinyal periyodu

pulse plate

(Otomotiv) titreşim plakası

pulse position modulation

darbe (vurum) konum kiplenimi

pulse rate

(isim)bız sayısı

pulse regeneration

darbenin yeniden uretimi

(Denizbilim) atış tekrarı

pulse repetition frequency

(Askeri) PALS TEKRARLAMA FREKANSI: Radarlarda bir saniyedeki pals sayısı. Radar transmisyon frekansı ile karıştırılmamalıdır

pulse repetition rate

(Nükleer Bilimler) darbe tekrarlama hızı

pulse reshaping

darbe onarimi

pulse restoration

darbe yenileme

pulse rise time

darbe (vurum) yukselme suresi

pulse sensor

(Otomotiv) titreşim algılama sensörü

pulse sensor

(Otomotiv) sinyal algılama sensörü

pulse sensor

titreşim sensörü

pulse shaping circuit

darbe bicimlendirici devre

pulse signalling

darbelerle isaretlesme

pulse spectrum

darbe spektrumu

pulse spectrum

(Bilgisayar) vurum spektrumu

pulse transformer

darbe trafosu

pulse transformer

(Bilgisayar,Teknik) darbe transformatörü

pulse triggering

darbe (vurum) tetikleme

pulse tuning

(Nükleer Bilimler) darbe uyumu

pulse welding

(Bilgisayar) darbeli kaynak

pulse width modulation

darbe (vurum) genislik kiplenimi

(Dilbilim) göğüs atışı

chest pulse

(Dilbilim) vurgulu soluk

counter pulse

(Bilgisayar,Teknik) sayaç darbesi

inhibit pulse

(Bilgisayar) ketleme vurumu

intensive pulse light

(Tıp) yoğun darbeli ışık

keep one's finger on the pulse

vakıf olmak

leading edge of a pulse

darbenin ön kenarı

pulses

(Tarım) baklagiller

pulsing

atarak

quicken the pulse

electromagnetic pulse

birinin nabzını yoklamak

horizontal blanking pulse

yatay silme sinyali

horizontal synchronizing pulse

yatay senkronizasyon sinyali

line synchronizing pulse

satır senkronizasyon sinyali

{i} nabız gibi atış

pulsing

{f} nabız gibi at

reply video pulse

(Mühendislik) darbeli

hızlı nabız, şiddetli nabız atması

field synchronizing pulse

alan senkronizasyon sinyali, alan eşleme imi

have one's finger on the pulse

(deyim) En son gelişmeleri, gündemi yakından takip etmek

keep one's finger on the pulse

(deyim) En son gelişmeleri, gündemi yakından takip etmek

keep the pulse

(deyim) En son gelişmeleri, gündemi yakından takip etmek

pedal pulse

ayaktan alınan nabız

rectangular pulse

dikdörtgen darbe

sprocket pulse

çekici delik darbesi, tırnak vuruşu

A.C. pulse

almasik akim darbesi

adaptive differential pulse code modulation

uyarlanir darbe darbe kod kiplenimi

capillary pulse

(Tıp) kapilar nabız

clock pulse

saat atışı

clock pulse, clock signal

Saat Vurumu

coherent pulse radar

(Havacılık) yapışık pals radarı

counter pulse

sayac darbesi

dial pulse

numara cevirme darbesi

differential pulse code modulation

(DPCM) Ayrimsal Darbe Kod Kiplenimi

digital clock pulse generator

(Askeri) dijital saat pals üretici

electromagnetic pulse

(Askeri) elektromanyetik pals

electromagnetic pulse

(Askeri) ELEKTROMANYETİK PALS: Nükleer aygıtların malzemelerinden veya çevreleyen ortamdan yayılan fotonların "Comptonrecoil" elektronları ve fotoelektronlarının neden olduğu bir nükleer patlamadan meydana gelen elektromanyetik radyasyon. Sonuçta oluşan elektriksel ve manyetik alanlar elektriksel/ elektronik sistemlerle birleşerek hasar verici akım ve voltaj iniş çıkışları oluşturabilir. Nükleer olmayan vasıtalarla da oluşabilir. Ayrıca EMP de denir

enabling pulse

(Elektrik, Elektronik,Teknik) yeterli darbe

Английский Язык - Английский Язык

Определение pulse в Английский Язык Английский Язык словарь: to flow, particularly of blood
Hot blood pulses through my veins.; A beat or throb; The beat or tactus of a piece of music; to emit in discrete quantities; A normally regular beat felt when arteries are depressed, caused by the pumping action of the heart; to beat, to throb, to flash
In the dead of night, all was still but the pulsing light.; Any annual legume yielding from 1 to 12 grains or seeds of variable size, shape and colour within a pod, and used as food for humans or animals; Any measured or regular beat; any short, quick motion, regularly repeated, as of a medium in the transmission of light, sound, etc; The beating or throbbing of the heart or blood vessels, especially of the arteries; {v} to beat as the pulse, to drive forward; {n} a beating of the blood, pease; the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health; The beat; the rhythmic pattern underlying a groove; Some seeds which can be cooked and eaten are called pulses, for example peas, beans, and lentils; In music, a pulse is a regular beat, which is often produced by a drum. the repetitive pulse of the music; detection mode on which a short signal from the traffic detector is ent when a vehicle is detected Typically used to provide volume counts; rhythmical beating, vibrating, or sounding; If something pulses, it moves, appears, or makes a sound with a strong regular rhythm. His temples pulsed a little, threatening a headache It was a slow, pulsing rhythm that seemed to sway languidly in the air. = throb; edible seeds of various pod-bearing plants peas or beans or lentils etc; produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses; "pulse waves"; "a transmitter pulsed by an electronic tube"; A pulse of electrical current, light, or sound is a temporary increase in its level. The switch works by passing a pulse of current between the tip and the surface; Energy which changes abruptly from one intensity to another Maybe light energy or electrical energy; The listener's perception of beats per measure; When someone takes your pulse or feels your pulse, they find out how quickly your heart is beating by feeling the pulse in your wrist. Pressure wave in the arteries from contraction of the heart. It can be felt where arteries are near the skin's surface; it is usually read at the carotid artery in the neck or at the wrist. Its rate, strength, and rhythm and the contour of the wave provide valuable information but must be viewed in context (e.g., rapid pulse occurs with serious heart disease, simple fever, or vigorous exercise). The average adult pulse rate is 70-80 beats per minute; the rate decreases with age and is generally faster in women; A beat, throb; The rhythmic beating in the arteries, caused by the contractions of the heart; A transient field applied to a quantum system In the case of NMR QIP, pulses are rotating magnetic fields (RF pulses) whose effects are designed to cause specific rotations of the qubit states carried by the nuclear spins; the rhythmic contraction and expansion of the arteries with each beat of the heart; "he could feel the beat of her heart"; The electronic signal generated by a particle (cell or nucleus) in the flow cytometer; oscillation; vibration; pulsation; impulse; beat; movement; The smallest regular unit of time implied in a piece of music; French: impulsion A variation in electrical energy above or below a normal level and a given duration, such as a brief surge of voltage or current; The regular beating in the arteries from the pumping of the heart; If you refer to the pulse of a group in society, you mean the ideas, opinions, or feelings they have at a particular time. The White House insists that the president is in touch with the pulse of the black community; expand and contract rhythmically; beat rhythmically; "The baby's heart was pulsating again after the surgeon massaged it"; If you have your finger on the pulse of something, you know all the latest opinions or developments concerning it. He claims to have his finger on the pulse of the industry It's important to keep your finger on the pulse by reading all the right magazines; ) the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses; "pulse waves"; "a transmitter pulsed by an electronic tube"; Your pulse is the regular beating of blood through your body, which you can feel when you touch particular parts of your body, especially your wrist. Mahoney's pulse was racing, and he felt confused; A form of dialing on a telephone line (Rotary); {f} beat, throb; expand and contract rhythmically; vibrate, quiver; flow; cause to pulse; produce or control in the form of short pulses; cause an apparatus to produce pulses (as "to pulse the food processor"); (Medicine) administer medication in interrupted and in concentrated dosages to avoid undesirable side effects; A current or voltage which changes abruptly from one value to another and back to the original value in a finite length of time Used to describe one particular variation in a series of wave motions; The electrical energy applied to the EDM gap, having a preset voltage, amperage and duration, that is intended to cause a discharge that results in metal removal; A pulse is generally a unipolar voltage or current with defined characteristics, which occurs infrequently; A current or voltage which changes abruptly from one value to another & back to the original value in a finite length of time Used to describe one particular variation in a series of wave motions; Indirect measurement of heart rate by feeling and counting pressure waves in an artery (usually the radial artery); To beat, as the arteries; to move in pulses or beats; to pulsate; to throb; This is the older "rotary service" This service does not permit interfacing with network services; edible seeds of various pod-bearing plants (peas or beans or lentils etc ); (electronics) a sharp transient wave in the normal electrical state (or a series of such transients); "the pulsations seemed to be coming from a star"; {i} heartbeat, rhythmic expansion and contraction of the heart; throbbing, beating; edible seeds of various plants; plants producing these types of seeds; To drive by a pulsation; to cause to pulsate; Leguminous plants, or their seeds, as beans, pease, etc; drive by or as if by pulsation; "A soft breeze pulsed the air; The tick of a computer clock is sometimes referred to as a "pulse " Example: One clock pulse might be defined as 1/240th of a quarter-note; A single disturbance made in a medium This is not a full wave because it consists of a half-vibration: either a single crest or compression but no trough or rarefaction Click for a graphic Back to Top Back to Wave Index; A single nonrepeated disturbance quality The property of sound waves that depends on the number of harmonics and their prominence; drive by or as if by pulsation; "A soft breeze pulsed the air"; A current or voltage which changes abruptly from one value to another and back to the original value in a finite length of time; A very short duration of time In regard to a radar, it is a brief burst of a electromagnetic radiation emitted by the radar; the rhythmic contraction and expansion of the arteries with each beat of the heart; "he could feel the beat of her heart" edible seeds of various pod-bearing plants peas or beans or lentils etc; A small message that doesn't require a reply; used for asynchronous communication with a Photon application
pulse demodulator: a device that recovers the modulating signal from a pulse modulated wave
pulse demodulators: plural form of pulse demodulator
pulse detonation engine: A jet engine driven by repeated detonations within the engine
pulse detonation engines: plural form of pulse detonation engine
pulse dialing: A system of telephone dialing in which each digit is transmitted as the equivalent number of pulses
pulse dialling: Alternative spelling of pulse dialing
pulse jets: plural form of pulse jet
pulse modulation: any of a number of techniques whereby a series of information-carrying quantities occurring at discrete instances of time is encoded into a corresponding series of electromagnetic carrier pulses
pulse modulations: plural form of pulse modulation
pulse modulator: A device for the pulse modulation of a radio-frequency carrier signal
pulse modulators: plural form of pulse modulator
pulse oximeter: A device used to monitor the oxygen level of a patient's blood
pulse oximetry: A non-invasive method allowing the monitoring of the oxygenation of a patient's hemoglobin, using a sensor placed on a thin part of the patient's anatomy, usually a fingertip or earlobe
pulse jet engine: (Teknoloji) A pulse jet engine (or pulsejet) is a very simple form of internal combustion engine wherein the combustion occurs in pulses and the propulsive effort is a jet; a reaction to the rearward flow of hot gases
pulse code modulation: Pulse Code Modulation (PCM) is a modulation scheme involving conversion of a signal from analog to digital form by means of coding See also modulation
pulse code modulation: A method for transmitting data in digital format
pulse code modulation: Method of sampling information signals at regular intervals and transmitting the samples as a series of pulses in coded form which represent the amplitude of the information signal at that time
pulse code modulation: French: modulation par impulsions et codage (MIC) A modulation technique in which the signal being transmitted is sampled at regular intervals to determine its magnitude The magnitude is converted to a digital pulse for transmission (See pulse modulation )
pulse code modulation: The most common method of representing an analog signal, such as speech, by sampling at a regular rate and converting each sample to an equivalent digital code
pulse code modulation: A method of encoding and de-encoding a digital signal There are actually several varieties in use today, including linear, non-linear, floating point, and differential These vary mainly in how they deal with quantization, and how they handle values that fall "between" the digital signals bits
pulse code modulation: Method of modulation in which signals are sampled and converted to digital words that are then transmitted serially Most PCM systems use either 7- or 8-bit binary codes There are, however, several standards for PCM coding: most common are µ-Law in North America and A-Law in Europe (both based on logarithmic conversion of the signal)
pulse code modulation: A method of quantizing audio-range analog signals into a digital form for transmission in digital communications systems, or for processing in DSP Effectively the same as analog-to-digital conversion
pulse code modulation: A means for representing a sequence of binary numbers by a series of electrical pulses
pulse code modulation: A method used to convert an analog signal into noise-free digital data that can be stored and manipulated by computer PCM takes an 8-bit sample of a 4kHz bandwidth 8000 times a second, which gives 16K of data per second PCM is often used in multimedia applications
pulse code modulation: A process in which a signal is sampled, and the magnitude of each sample with respect to a fixed reference is quantized and converted by coding to a digital signal
pulse code modulation: PCM is the most common method a telephone company in North America can use to sample a voice signal and convert that sample in an equivalent digital code consisting of zeros and ones
pulse code modulation: Process in which the modulating signal is sampled, and the magnitude of each sample (with respect to a fixed reference) is quantized and converted by coding to a digital signal Provides undistorted transmission, even in the presence of noise The sample frequency must be at least twice the highest modulating frequency for full recovery of the original modulating information
pulse code modulation: The process that samples, quantizes, and codes the modulating analog signal into digital bit stream
pulse counter: an electronic counter that counts the number of electric pulses
pulse generator: a generator of single or multiple voltage pulses; usually adjustable for pulse rate
pulse modulation: modulation that imposes a signal on a train of pulses
pulse modulation: A system of modulation in which pulses are altered and controlled in order to represent the message to be communicated
pulse rate: numbers of pulses (X-ray quanta) per time-unit, measured in cps (counts per second) See net-pulse-rate
pulse rate: the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health
pulse rate: The number of beats-per-minute of the human heart
pulse rate: is the number of heartbeats per minute The resting pulse rate of an average adult is between 60 and 100 beats per minute
pulse rate: The number of times a heart beats per minute in a person's body
pulse rate: Pulse rate is the number of heart beats per minute
pulse rate: The number of pulses per second (pps) applied to the windings of the motor The pulse rate is equivalent to the motor step rate
pulse rate: frequency of pulses applied to the drive
pulse speed: number of times the heart beats each minute
pulse timing circuit: a circuit that times pulses
pulse wave: A family of geometrical waveforms typically generated by an oscillator Waveform Harmonic Structure Hear Me (8k) They are all rectangular in shape, i e the only angle which occurs is 90° between immediate, vertical transitions and horizontal "high" or "low" levels, but they have any possible mark/space ratio Square wave is a special case of pulse wave where the mark/space ratio is 1: 2 The harmonic partials present are determined by the mark/space ratio such that the harmonics which are multiples of the rightmost number in the ratio will be absent Thus a pulse wave with a mark/space ratio of 1: 3 will not have the 3rd , 6th or 9th etc harmonics Other harmonics will be present at varying amplitudes depending on their proximity to the "dead" or absent harmonics When the ratio becomes very large i e the pulse becomes very narrow, the timbre becomes correspondingly thin and nasal, rather like an oboe or harpsichord See also Ramp Wave, Sine Wave, Square Wave, Triangle Wave
pulse wave: Kind of like a square wave, except not so even in the time periods __|"|___|"|___ Q
pulse width: An indication of how long an injector is energized and kept open
pulse width: Same as ARC DURATION The reference is made to the width of the pulse in a display of the wave form
pulse width: Deprecated synonym for pulse duration
pulse-time modulation: modulation of the time between successive pulses
finger on the pulse: An active interest in the latest developments (of some topic)
Despite retiring, he still tries to keep a finger on the pulse of the industry.
nuclear-pulse rocket: a rocket that uses the impulse imparted by the detonation of nuclear bombs as the propulsive force to propel the spacecraft
nuclear-pulse rockets: plural form of nuclear-pulse rocket
oxygen pulse: Physiological term for oxygen uptake per heartbeat at rest
pulsing: Present participle of pulse
pulsing: That pulses
have one's finger on the pulse: (deyim) Be/stay familiar with the most recent changes or improvements
keep the pulse: (deyim) Be/stay familiar with the most recent changes or improvements
keep your finger on the pulse: (deyim) Be/stay familiar with the most recent changes or improvements
Adaptive Differential Pulse Code Modulation: method of compression for sound data
electromagnetic pulse: The pulse of intense electromagnetic radiation generated by certain physical events, especially by a nuclear explosion high above the earth
feel one's pulse: check one's heart rate by pressing the fingers against veins in the wrist or neck
feel the pulse: check the heart rate by pressing the fingers against veins in the wrist or neck
feeling the pulse: groping for the pulse, sensing the regular beating of the heart
felt the pulse: checked the heart rate by pressing the fingers against veins in the wrist or neck
femoral pulse: pulse of the femoral artery (felt in the groin)
pulsed: past of pulse
pulsed: Producing, or consisting of pulses (short bursts)
pulsed: produced or transmitted or modulated in short bursts or pulses; "pulsed electromagnetic waves"; "pulsed light"; "pulsed ultrasonic energy
pulses: plural of pulse
pulsing: A flighting technique that has continuous advertising with intermittent bursts of heavy advertising
pulsing: The use of advertising in regular intervals, as opposed to seasonal patterns
pulsing: Pulsing is a method of moving that is used by the jellyfish
pulsing: Repeating the movement except it is in a smaller range of motion and at a faster pace
pulsing: expanding and contracting rhythmically as to the beating of the heart; "felt the pulsating artery"; "oh my beating heart"
pulsing: Sequencing and controlling the amount of current, the polarity, and the duration of the welding arc
pulsing: The emission of pulses
pulsing: In telephony, the transmission of address information to a switching office by means of pulses, i e , signals, that originate from the subscriber, i e , user, equipment Note: Examples of pulsing methods are dual-tone multifrequency (DTMF) signaling, in which a unique pair of audio frequencies represents each of the respective numerals or other characters on a keypad, and rotary dialing, in which dc pulses are generated by a rotary dial Synonyms key pulsing (when using a keypad), dial pulsing (when using a rotary dial)
pulsing: (electronics) a sharp transient wave in the normal electrical state (or a series of such transients); "the pulsations seemed to be coming from a star"
radial pulse: pulse of the radial artery (felt in the wrist)
the pulse: ictus
took his pulse: measured the speed of his heart beats

Турецкий язык - Английский Язык

Определение pulse в Турецкий язык Английский Язык словарь
puls: pulse

pulse

Турецкое произношение

pʌls

Синонимы

beating, oscillation, pulsation, stroke, throb, throbbing, vibration

Произношение

/ˈpəls/ /ˈpʌls/

Этимология

[ p&ls ] (noun.) 13th century. Latin pulsus (“beat”), from pellere (“to drive”). For spelling, the -e (on -lse) is so the end is pronounced /ls/, rather than /lz/ as in pulls, and does not change the vowel (‘u’). Compare else, false, convulse.