What is the meaning of heliograph?

noun

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

verb

  • Signal by means of a mirror and the using the sun's rays. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). heliograph. Retrieved September 20, 2026, from http://smartdefine.org/heliograph/definitions/1204797
ChicagoWordNet. 2010. "heliograph" http://smartdefine.org/heliograph/definitions/1204797 (accessed September 20, 2026).
HarvardWordNet 2010, heliograph, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/heliograph/definitions/1204797>.
MLAWordNet. "heliograph" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/heliograph/definitions/1204797>
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