Home › Words › I › isoazimuthalisoazimuthalisoazimuthal means the locus of the points on the earth's surface whose orthodromic initial path with respect to a fixed point is constant.EtymologyFrom iso- + azimuthal.nounThe locus of the points on the earth's surface whose orthodromic initial path with respect to a fixed point is constant.Definitions & examples from Wiktionary (CC BY-SA 3.0).