[mid-kawrs, -kohrs]
  1. the middle of a course.
  2. Rocketry. the portion of a ballistic trajectory between the end of powered flight and the beginning of the reentry phase.
  3. Aerospace. the portion of a space trajectory between leaving the earth's vicinity and arrival at the desired destination, as another planet.

Origin of midcourse

First recorded in 1555–65; mid- + course
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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