yocto-

English - English

Definition of yocto- in English English dictionary

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10−24. Symbol: y

One septillionth (10-): yoctosecond

Antonyms

yotta-

Etymology

() Ancient Greek ὀκτώ (oktō, “eight”), for the eighth order of 10−3. The letter y was added, as the second term in a series running backwards through the alphabet.