heliostat Hear it!

heliostat definition

he·lio·stat (hē′lē ō stat′)

noun

a device consisting of a mirror slowly revolved by clockwork so as to reflect the sun's rays continuously in a fixed direction

Etymology: < ModL heliostata: see helio- & -stat

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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