heliostat Meaning, Definition & Usage

He"li*o*stat noun

Etymology

Helio- + Gr. placed, standing, fr. to place, stand: cf. F. héliostate.

Definitions

1. An instrument consisting of a mirror moved by clockwork, by which a sunbeam is made apparently stationary, by being steadily directed to one spot during the whole of its diurnal period; also, a geodetic heliotrope.