/ Dictionary / Index G gigantism: Meaning and Definition of Find definitions for: gi•gan•tism Pronunciation: (jī-gan'tiz-um, ji-, jī'gan-tiz"um), [key] — n. Pathol. abnormally great development in size or stature of the whole body or of parts of the body, most often due to dysfunction of the pituitary gland. Cf. hypertrophy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gigantism (Thesaurus) gigantic Gigantopithecus* Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language