/ Dictionary / Index C contrail: Meaning and Definition of Find definitions for: con•trail Pronunciation: (kon'trāl), [key] — n. a visible condensation of water droplets or ice crystals from the atmosphere, occurring in the wake of an aircraft, rocket, or missile under certain conditions. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: contrail (Thesaurus) contra-guide rudder contraindicate Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language