/ Dictionary / Index S structural geology: Meaning and Definition of Find definitions for: struc'tural geol'ogy Pronunciation: [key] the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also calledCf.(def. 7a). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. structural gene structural iron 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