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 History of this Word

"zepto" is from "septem" (seven) spoken by ancient people in central Italy around 700 B.C.


In this sense, it is a word added to another word to form a new word.

More words with this prefix,

Words related to this meaning

grammar is modifier

"zepto-" is a type of prefix


A prefix added to the start of a word. Indicates that "one thousand million million millionth" modifies the word. Created to expand meanings. Can be used with many words to form new words.

Examples of how the word is used

zepto- illustration A zeptogram is roughly the mass of a single protein molecule and its detection has set a new record.
zepto- illustration A zm is a zeptometer, which is a whole lot smaller than the galaxy.