(In relation to the motion of circumpolar stars) that part of the celestial meridian which extends from the celestial pole and passes through the zenith (now rare).
Origin
Early 19th century. After French méridien supérieur.
Definition of superior meridian in US English:
superior meridian
noun
Astronomy
(In relation to the motion of circumpolar stars) that part of the celestial meridian which extends from the celestial pole and passes through the zenith (now rare).
Origin
Early 19th century. After French méridien supérieur.