Definition of optophone in English:

optophone

Syllabification: op·to·phone
Pronunciation: /ˈäptəˌfōn
 
/

noun

An instrument that scans printed characters and converts them into sound, thus enabling blind people to read by ear.
More example sentences
  • The optophone is not an echo-locator; it is a device that converts images from a camera into audible sounds.

Origin

early 20th century: from Greek optos 'seen' + -phone.

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