/ Dictionary / Index G gyrectomy: Meaning and Definition of Find definitions for: gy•rec•to•my Pronunciation: ( jī-rek'tu-mē), [key] — pl. -mies. excision of a cerebral gyrus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gyre gyrene 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