What is the meaning of Photophone?

(n.) An apparatus for the production of sound by the action of rays of light.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). photophone. Retrieved September 23, 2026, from http://smartdefine.org/photophone/definitions/2044996
ChicagoWebster's. 2011. "photophone" http://smartdefine.org/photophone/definitions/2044996 (accessed September 23, 2026).
HarvardWebster's 2011, photophone, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/photophone/definitions/2044996>.
MLAWebster's. "photophone" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/photophone/definitions/2044996>