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heliograph

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
he·li·o·graph  (hl--grf)
n.
1. A device for transmitting messages by reflecting sunlight.
2. A device for photographing the sun.
v. he·li·o·graphed, he·li·o·graph·ing, he·li·o·graphs
v.tr.
To send (a message) by heliograph.
v.intr.
To send a heliograph.
heli·ogra·pher (-gr-fr) n.
heli·o·graphic adj.
heli·ogra·phy (-gr-f) n.
heliograph
Noun
an instrument with mirrors and a shutter used for sending messages in Morse code by reflecting the sun's rays [Greek hēlios sun + -graphy]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.heliographheliograph - an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
apparatus, setup - equipment designed to serve a specific function
Verb1.heliograph - signal by means of a mirror and the using the sun's rays
signal, signalise, signalize, sign - communicate silently and non-verbally by signals or signs; "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu"
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I told him it was the heliograph signalling--that it was the sign of human help and effort in the sky.
The War Of The Worlds by Wells, H.G. View in context
Then a piece of mica, or a little pool, or even a highly-polished leaf will flash like a heliograph.
The Second Jungle Book by Kipling, Rudyard View in context
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