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sideromancy |
sideropenia |
siderophilin |
sideroscope |
siderosis |
siderostat
| sideroxylon
| sidesaddle
| sideshow
| sideslip
| sidesman
siderostat
CIDE DICTIONARY
siderostat, n. [L. sidus, sideris, a star + Gr. standing, fixed, fr. to place.].
An apparatus consisting essentially of a mirror moved by clockwork so as to throw the rays of the sun or a star in a fixed direction; -- a more general term for heliostat . [1913 Webster]
OXFORD DICTIONARY
siderostat, n. an instrument used for keeping the image of a celestial body in a fixed position.
Etymology
L sidus sideris star, after heliostat
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