The Collaborative International Dictionary
Almacantar
Almacantar \Al`ma*can"tar\, n. (Astron.)
Same as Almucantar.
A recently invented instrument for observing the heavenly bodies as they cross a given almacantar circle. See Almucantar. [1913 Webster] ||
Wiktionary
almacantar
n. 1 (alternative form of almucantar English) 2 An instrument for observing the heavenly bodies as they cross a given almucantar circle.