isogone


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Noun1.isogone - an imaginary line connecting points on the Earth's surface where the magnetic declination is the same
isogonal line, isogonic line
line - a spatial location defined by a real or imaginary unidimensional extent
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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[He then gives a series of interfacial angles, and notes that they] agree almost precisely with the tourmaline isogone of Hauy.
Kingsbridge, an early quarrying district on Manhattan Island

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