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true north

noun Navigation, Surveying.
  1. the direction of the north pole from a given point.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for true north

true north

noun
  1. the direction from any point along a meridian towards the North PoleAlso called: geographic north Compare magnetic north
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
true north in Science

true north

  1. See geographic north.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.