Pronunciation: (jī-gan'tiz-um, ji-, jī'gan-tiz"um), [key]
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.