grid north
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Related to grid north: magnetic north
grid north
[′grid ¦nȯrth] (navigation)
In grid navigation, the northerly or zero direction indicated by the grid datum of directional reference.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
grid north

Meridian relationship to grid north.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved