armillary

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ARMILLARY

a.[L. armilla, a bracelet, from armus, the arm. ] Resembling a bracelet, or ring; consisting of rings or circles. It is chiefly applied to an aritificial sphere, composed of a number of circles of the mundane sphere, put together intheir natural order, to assist in giving a just conception of the constitution of the heavens, and the motions of the celestial bodies. This aritificial sphere revolves upon its axis within a horizon, divided into degrees, and movable every way upon a brass supporter.

ARMILLARY

Ar "mil *la *ry, a. Etym: [LL. armillarius, fr. L. armilla arm ring, bracelet, fr. armus arm: cf. F. armillaire. See Arm, n.]

armillary sphere

ar mil lar y sphere |ˈärməˌlerē ˈɑrməlɛri ˌsfɪər | ▶noun a model of the celestial globe constructed from rings and hoops representing the equator, the tropics, and other celestial circles, and able to revolve on its axis. ORIGIN mid 17th cent.: from modern Latin armillaris ‘relating to an armilla , ’ an astronomical instrument consisting of a hoop fixed in the plane of the equator (sometimes crossed by one in the plane of the meridian ), used by the ancient astronomers to show the recurrence of equinoxes and solstices; from Latin armilla ‘bracelet. ’

armillary sphere

ar ¦mil |lary sphere ▶noun a model of the celestial globe constructed from rings and hoops representing the equator, the tropics, and other celestial circles, and able to revolve on its axis. ORIGIN mid 17th cent.: from modern Latin armillaris ‘relating to an armilla ’, an astronomical instrument consisting of a hoop fixed in the plane of the equator (sometimes crossed by one in the plane of the meridian ), used by the ancient astronomers to show the recurrence of equinoxes and solstices; from Latin armilla ‘bracelet ’.