isopor

[ ahy-suh-pawr ]

/ ˈaɪ səˌpɔr /

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.

Nearby words

isoplastic, isoplastic graft, isopleth, isopod, isopolity, isopor, isoprecipitin, isoprene, isoprenoid, isopropanol, isopropyl

Origin of isopor

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

Also called isoporic line.

Related forms

i·so·por·ic, adjective