/ Dictionary / Index A ateliosis: Meaning and Definition of Find definitions for: a•te•li•o•sis Pronunciation: (u-tē"lē-ō'sis, u-tel"ē-), [key] — n. Pathol. a form of infantilism caused by pituitary malfunction, characterized by a childish face and voice and associated physical underdevelopment, but not affecting intelligence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ateliosis (Thesaurus) atelier a tempo Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language