/ Dictionary / Index G geotectonic: Meaning and Definition of Find definitions for: ge•o•tec•ton•ic Pronunciation: ( jē"ō-tek-ton'ik), [key] — adj. tectonic (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. geotechnical geothermal Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language