Loxodrome

//ˈlɒksədɹəʊm// noun

Definitions

Noun
  1. 1
    A line on a surface (such as the Earth) that cuts all meridians at a constant angle (but not a right angle) – on Earth, the path followed by a ship or aircraft that maintains a constant course by the compass.
  2. 2
    a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction wordnet

Etymology

Back-formation from loxodromic, from Ancient Greek λοξός (loxós, “oblique”) + δρόμος (drómos, “course”) via French.

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