heliograph

noun

he·​lio·​graph ˈhē-lē-ō-ˌgraf How to pronounce heliograph (audio)
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
So desperate is culture to see a pregnant famous person in the wild, that most of the photos taken of Margot Robbie over the past couple of weeks seem to have been taken on a heliograph. Daniel Rodgers, Vogue, 10 Sep. 2024 Obsidian is a primordial ooze, its natural history connected to the heliographs and the projection. Christopher Knight, Los Angeles Times, 20 Oct. 2023

Word History

Etymology

International Scientific Vocabulary

First Known Use

1877, in the meaning defined above

Time Traveler
The first known use of heliograph was in 1877

Dictionary Entries Near heliograph

Cite this Entry

“Heliograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heliograph. Accessed 21 Nov. 2024.

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