/ Dictionary / Index S structural gene: Meaning and Definition of Find definitions for: struc'tural gene" Pronunciation: [key] — Genetics. Genetics. cistron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. structural functionalism structural geology Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language