/ Dictionary / Index H hypophysectomy: Meaning and Definition of Find definitions for: hy•poph•y•sec•to•my Pronunciation: (hī-pof"u-sek'tu-mē, hi-), [key] — pl. -mies. excision of the pituitary gland. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypophysectomy (Thesaurus) hypophyllous hypophysis Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language