heliostat
[ hee-lee-uh-stat ]
/ ˈhi li əˌstæt /
noun
an instrument consisting of a mirror moved by clockwork, for reflecting the sun's rays in a fixed direction.
OTHER WORDS FROM heliostat
he·li·o·stat·ic, adjectiveWords nearby heliostat
heliophyte,
heliopolis,
helios,
helioscope,
heliosphere,
heliostat,
heliotaxis,
heliotherapy,
heliotrope,
heliotropic,
heliotropin
Example sentences from the Web for heliostat
In a short time we might earnestly wish for a centrifugal apparatus or a heliostat.
More Letters of Charles Darwin Volume II |Charles DarwinIn the absence of a heliostat it is more convenient to obtain a point of light with the aid of a lens of short focus.
Images of the sun are thrown into the observatory by an ingenious instrument run by clockwork, and called a heliostat.
In the absence of a heliostat the latter was the more convenient.
British Dictionary definitions for heliostat
heliostat
/ (ˈhiːlɪəʊˌstæt) /
noun
an astronomical instrument used to reflect the light of the sun in a constant direction