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heliostat

noun he·lio·stat \ˈhē-lē-ə-ˌstat\

Definition of HELIOSTAT

:  an instrument consisting of a mirror mounted on an axis moved by clockwork by which a sunbeam is steadily reflected in one direction
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Origin of HELIOSTAT

New Latin heliostata, from 1heli- + Greek -statēs -stat
First Known Use: 1747

Rhymes with HELIOSTAT

Angora cat, aristocrat, gerontocrat, go to the mat, humidistat, Jehoshaphat, kangaroo rat, magnificat, meritocrat, requiescat, Siamese cat, single combat, talk through one's hat, ten-gallon hat, thalassocrat, throw money at, under one's hat

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