phototelephony
The transmission of sound by means of lightThe transmission of sound by means of light.
Meaning
1 senses(dated, uncountable)The transmission of sound by means of light.
Origin
From photo- + telephony.From photo- + telephony.
Wiktionary, CC BY-SA 4.0 · source
Word family
1 related wordsRelatedphotophone
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable