English - Prefix
- In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 1021. Symbol: Z
English - Etymology
From Ancient Greek ἑπτά (heptá), for the seventh order of 103. The consonants pt are reduced to tt as in Italian, by analogy with peta-; the letter z was added, as a start to running through the alphabet backwards.
English - Pronunciation
- IPA(key): /ˈzɛtə/