読どく唇しん術じゅつ

noun

lip reading

Refers to the technique or skill of understanding speech by watching lip movements. Often used in contexts of deaf communication or surveillance.

• 彼かの女じょは読どく唇しん術じゅつで会かい話わの内ない容ようを理り解かいした。

  She understood the content of the conversation through lip reading.