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Webster's New World College Dictionary » coelostat
coelostat
coelostat definition
coe·lo·stat (sē′lə stat′)
noun
an optical system, used with a fixed telescope, consisting of two mirrors with a moving mirror mounted on an axis parallel to the earth's axis of rotation and driven by clockwork so as to reflect the same portion of the sky continuously or to track the sun
Etymology: < L caelum, sky, heavens + -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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