WordReference Random House Unabridged Dictionary of American English © 2026
mid•course
(mid′kôrs′, -kōrs′),USA pronunciation n.
- the middle of a course.
- Rocketrythe portion of a ballistic trajectory between the end of powered flight and the beginning of the reentry phase.
- Aerospacethe portion of a space trajectory between leaving the earth's vicinity and arrival at the desired destination, as another planet.
- mid- + course 1555–65
'midcourse' also found in these entries (note: many are not synonyms or translations):