( n. )
An instrument of wood or brass, on which this projection of the sphere is made, having a movable horizon or cursor; -- formerly much used in solving some common astronomical problems.
( n. )
An instrument of wood or brass, on which this projection of the sphere is made, having a movable horizon or cursor; -- formerly much used in solving some common astronomical problems.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012