heliograph

noun
he·lio·graph | \ˈhē-lē-ō-ˌgraf \

Definition of heliograph 

: an apparatus for telegraphing by means of the sun's rays flashed from a mirror

Other Words from heliograph

heliograph transitive verb

First Known Use of heliograph

1877, in the meaning defined above

History and Etymology for heliograph

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The first known use of heliograph was in 1877

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