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Related to compass north: magnetic north
compass north[′käm·pəs ′nȯrth]
The direction of north as indicated by a magnetic compass; the reference direction for measurement of compass directions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The uncorrected direction indicated by the north-seeking end of the compass needle.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved