/ Dictionary / Index O odontoglossum: Meaning and Definition of Find definitions for: o•don•to•glos•sum Pronunciation: (ō-don"tu-glos'um), [key] — n. any epiphytic orchid of the genus Odontoglossum, of the mountainous regions from Bolivia to Mexico. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: odontoglossum (Thesaurus) odontogeny odontograph Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language