Heliostat

Origin

Circa 1750, from New Latin heliostata, from Ancient Greek ἥλιος (helios, "sun") + Latin status ("stationary").

Full definition of heliostat

Noun

1. A device that includes a plane mirror which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the sun's apparent motions in the sky. The target may be a physical object, distant from the heliostat, or a direction in space, and is almost always stationary relative to the heliostat, so the light is reflected in a fixed direction.

Anagrams

• loathiest, thiolates