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isogonic line

American  

noun

  1. isogonal line.

isogonic line Scientific  
/ ī′sə-gŏn′ĭk /

  1. A line on a map connecting points of equal magnetic declination.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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