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May 26, 2012
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Dictionary


he•li•o•stat



Pronunciation: (hē'lē-u-stat"), [key]
—n.
an instrument consisting of a mirror moved by clockwork, for reflecting the sun's rays in a fixed direction.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

heliosphereheliotaxis
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