heliograph
noun
he·lio·graph
ˈhē-lē-ō-ˌgraf 
: an apparatus for telegraphing by means of the sun's rays flashed from a mirror
heliograph
transitive verb
Examples of heliograph in a Sentence
Recent Examples on the Web
Obsidian is a primordial ooze, its natural history connected to the heliographs and the projection.
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Christopher Knight, Los Angeles Times, 20 Oct. 2023
Christopher Knight, Los Angeles Times, 20 Oct. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'heliograph.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
Etymology
International Scientific Vocabulary
First Known Use
1877, in the meaning defined above
Dictionary Entries Near heliograph
Cite this Entry
“Heliograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heliograph. Accessed 19 Apr. 2024.
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More from Merriam-Webster on heliograph
Britannica.com: Encyclopedia article about heliograph
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