/ Dictionary / Index D detrain: Meaning and Definition of Find definitions for: de•train Pronunciation: (dē-trān'), [key] — v.i. to alight from a railway train; arrive by train. to transfer air from an organized air current to the surrounding atmosphere (opposed to entrain). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: detrain (Thesaurus) detractive detribalize Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language