/ Dictionary / Index A amino-acid dating: Meaning and Definition of Find definitions for: a•mi'no-ac'id dat"ing Pronunciation: (u-mē'nō as'id, am'u-nō"-), [key] a method used to date an organic geological or archaeological specimen, as a fossil or mummified body, by determining how much change has occurred in the amino-acid structure of that specimen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. amino acid aminoaciduria Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language