English dictionary
siderostat
/'s/I/d/@/r/@/,st/&/t/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
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 <i>heliostat</i>.
Source: webster1913