/ Dictionary / Index A Ames test: Meaning and Definition of Find definitions for: Ames' test" Pronunciation: [key] a test that exposes a strain of bacteria to a chemical compound in order to determine the mutagenic potential of the compound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ameslan ametabolic Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language