/ Dictionary / Index E ectomorph: Meaning and Definition of Find definitions for: ec•to•morph Pronunciation: (ek'tu-môrf"), [key] — n. a person of the ectomorphic type. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ectomorph (Thesaurus) ectomere ectomorphic Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language