/ Thesaurus / O Synonyms of one million million Find synonyms for: Noun1. trillion, one million million, 1000000000000, large integerusage: the number that is represented as a one followed by 12 zeros; "in England they call a trillion a billion"2. billion, one million million, 1000000000000, large integerusage: the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language