English Explanatory Dictionary

zepto-

English dictionary entry

Meanings

prefix
  1. In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁻²¹ (short scale sextillionth or long scale trilliardth). Symbol: z

Pronunciation

/ˈzɛp.təʊ/ /ˈzɛp.toʊ/ LL-Q1860 (eng)-Vealhurl-zepto-.wav

Word forms

zepto-

Etymology

Greek (h)epta- (seven), for the seventh order of 10⁻³. The final o conforms to the finals vowel of the SI series from micro- downwards; the letter z was added, as a start in a series of terms running backwards through the alphabet.

Antonyms

zetta-

Derived words

zeptoampere zeptobecquerel zeptobel zeptocandela zeptoelectronvolt zeptofarad zeptogram zeptogray zeptohenry zeptojoule zeptokelvin zeptolux zeptometer zeptomole zeptosecond zeptovolt zeptovoltampere zeptowatt
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