- 1. n. An instrument consisting of a mirror moved by clockwork, by which a sunbeam is made apparently stationary, by being steadily directed to one spot during the whole of its diurnal period; also, a geodetic heliotrope. Source: opted
- 2. An instrument consisting of a mirror moved by clockwork, by which a sunbeam is made apparently stationary, by being steadily directed to one spot during the whole of its diurnal period; also, a geodetic heliotrope. Source: webster
- 3. An instrument consisting of a mirror moved by clockwork, bywhich a sunbeam is made apparently stationary, by being steadilydirected to one spot during the whole of its diurnal period; also, ageodetic heliotrope. Source: adambom
- 4. n. An instrument consisting of a mirror moved by clockwork, by which a sunbeam is made apparently stationary, by being steadily directed to one spot during the whole of its diurnal period; also, a geodetic heliotrope. Source: ecdict
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heliostat
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heliotropeapparentlyclockworkconsistingdiurnalinstrumentmirrormovedperiodspotstationarysunbeamwholedirectedgeodeticsteadily