/ Dictionary / Index L linkage group: Meaning and Definition of Find definitions for: link'age group" Pronunciation: [key] — Genetics. Genetics. a group of genes in a chromosome that tends to be inherited as a unit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. linkage editor linkage map Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language