rhumb line(redirected from Mercator track)
Also found in: Thesaurus, Encyclopedia.
The path of a ship that maintains a fixed compass direction, shown on a map as a line crossing all meridians at the same angle. Also called loxodrome.
nOften shortened to: rhumb
1. (Mathematics) an imaginary line on the surface of a sphere, such as the earth, that intersects all meridians at the same angle
2. (Navigation) the course navigated by a vessel or aircraft that maintains a uniform compass heading
[C16: from Old Spanish rumbo, apparently from Middle Dutch ruum space, ship's hold, but also influenced by Latin rhombus]
the path of a ship that maintains a constant compass direction.
rhumb line- 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.
See also related terms for sphere.