isogonic line

noun

Definition of isogonic line

: an imaginary line or a line on a map joining points on the earth's surface at which the magnetic declination is the same

called also isogonal

First Known Use of isogonic line

circa 1859, in the meaning defined above

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The first known use of isogonic line was circa 1859

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Dictionary Entries Near isogonic line

isogonic

isogonic line

isogonism

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Cite this Entry

“Isogonic line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isogonic%20line. Accessed 18 Aug. 2022.

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