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heliograph

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(-graf′)

noun

a permanent image formed on a glass plate by an early photographic process
a device for sending messages or signaling by flashing the sun's rays from a mirror

Origin: helio- + -graph

transitive verb, intransitive verb

to signal or communicate by heliograph

Related Forms:

See heliograph in American Heritage Dictionary 4

noun

A device for transmitting messages by reflecting sunlight.
A device for photographing the sun.

verb he·li·o·graphed, he·li·o·graph·ing, he·li·o·graphs

verb, transitive

To send (a message) by heliograph.

verb, intransitive

To send a heliograph.

Related Forms:

heˌli·ogˈra·pher (-ŏgˈrə-fər) noun

heˌli·o·graphˈic adjective

heˌli·ogˈra·phy (-ŏgˈrə-fē) noun

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