uncorrect

[uhn-kuh-rekt]
verb (used with object) Navigation.
  1. to convert (a true course) into a magnetic course.
  2. to convert (a magnetic course) into a compass course.

Origin of uncorrect

First recorded in 1495–1505; un-2 + correct
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018