The minimum interval during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet
Punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation)
When she is on her period she can be more disagreeable than usual.
(1) The time for one complete cycle, vibration, revolution, or oscillation (2) The time required for a single wavelength to pass a given point
A period in the life of a person, organization, or society is a length of time which is remembered for a particular situation or activity. a period of economic good health and expansion He went through a period of wanting to be accepted The South African years were his most creative period
the amount of time it takes a body to perform one rotation or revolution In the case of Kepler's Third Law of Planetary Motion it is the time it takes for a planet to complete one revolution, or one orbit about the sun
One of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in circulating decimals