/ Dictionary / Index M midcourse: Meaning and Definition of Find definitions for: mid•course Pronunciation: (mid'kôrs", -kōrs"), [key] — n. the middle of a course. the portion of a ballistic trajectory between the end of powered flight and the beginning of the reentry phase. the portion of a space trajectory between leaving the earth's vicinity and arrival at the desired destination, as another planet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mid-Cities midcourse correction Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language