Definify.com

Webster 1913 Edition

Photophone

Pho′to-phone

(fō′tō̍-fōn)

,

Noun.

[

Photo-

+ Gr.

φωνή

sound.]

(Physics)

An apparatus for the production of sound by the action of rays of light.

A. G. Bell.

Definition 2024

photophone

photophone

English

Noun

photophone ‎(plural photophones)

a device that transmitted sound on a beam of light