Rhumb line

noun

Definitions

Noun
  1. 1
    A line that cuts all meridians at the same angle, the path of a vessel that maintains a constant compass direction.

    "On portolan maps rhumb lines were all the go long before Mercator's time. […] It's a different matter putting a straight rhumb line on a map made for a round world. And on a map made for the whole world."

  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

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