/ Dictionary / Index S somatotropin: Meaning and Definition of Find definitions for: so•mat•o•tro•pin Pronunciation: (su-mat"u-trō'pin, sō"mu-tu-), [key] — n. Biochem. a hormone secreted by the anterior pituitary gland, that stimulates growth in humans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: somatotropin (Thesaurus) somatostatin somatotype 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