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isopor

[ ahy-suh-pawr ]
/ ˈaɪ səˌpɔr /
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noun
an imaginary line on the earth's surface connecting points of equal annual change in the declination, inclination, or other components of the earth's magnetic field.
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Also called isoporic line .

Origin of isopor

1930–35; iso- + -por<Greek póros path, pore2

OTHER WORDS FROM isopor

i·so·por·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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