Greek(h)epta- (seven), for the seventh order of 10−3. The finalo conforms to the finals vowel of the SI series frommicro- downwards; the letterz was added, as a start in a series of terms running backwards through the alphabet.
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zepto-
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FromAncient Greekἑπτά(heptá,“seven”), for the seventh order of 10−3. The finalo conforms to the finals vowel of the SI series frommicro- downwards; the letterz was added, as a start in a series of terms running backwards through the alphabet.
| Audio: | (file) |
zepto-
