photophone · noun1
From photo- (“light”) + -phone (“a device that makes a sound”).
photophone · noun2
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A device that transmitted sound on a beam of light. Full definition →
From photo- (“light”) + -phone (“a device that makes a sound”).
Etymology from Wiktionary, CC BY-SA 4.0.