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heliograph - Similar and Opposite Words

What is another word for heliograph ?

Here are the synonyms for heliograph , a list of similar words for heliograph from our thesaurus that you can use

Noun

an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on

Synonyms

More generic

Verb

signal by means of a mirror and the using the sun's rays

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