Al`mu*can"tar (?), n. [F.
almucantarat, almicantarat, ultimately fr. Ar. al-
muqantarÄt, pl., fr. qantara to bend, arch.]
(Astron.) A small circle of the sphere parallel to the horizon;
a circle or parallel of altitude. Two stars which have the same
almucantar have the same altitude. See Almacantar.
[Archaic]
Almucanter staff, an ancient instrument, having an
arc of fifteen degrees, formerly used at sea to take observations of the
sun's amplitude at the time of its rising or setting, to find the variation
of the compass.