Examples of heliograph from BoostVocab

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heliograph

/'hiliə,græf/

Synonyms of heliograph Antonyms of heliograph Examples of heliograph Usage of heliograph Parts of heliograph Definition that contains heliograph Words sounding like heliograph Explanation of heliograph

noun
an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
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type of:
apparatus setup
verb
signal by means of a mirror and the using the sun's rays
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type of:
sign signal signalise signalize

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