(-en, -er): En himmelstorcirkel, der går gennem begge poler. meridian // a great semi-circle joining the true-north and the true-south poles.
[Röding, JoNav, vol. 22, no. 2, Apr. 1969 p.263]
magnetisk meridian. at any point, the direction of that part of the horizontal component of the magnetic field of a planet which runs towards the north magnetic pole.
[JoNav, vol. 22, no. 2, Apr. 1969 p.263]
[NAV1 p.3 + 131, EST] Kilder