/ Dictionary / Index T trachelium: Meaning and Definition of Find definitions for: tra•che•li•um Pronunciation: (tru-kē'lē-um), [key] — pl. -li•a (in classical architecture) any member between the hypotrachelium and the capital of a column. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tracheitis tracheo- Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language