睡すい眠みん学がく習しゅう

noun

sleep-learning; hypnopedia

The idea or practice of learning while asleep, often by listening to audio recordings. The term is more common in speculative or educational contexts than in everyday conversation.

• 睡すい眠みん学がく習しゅうで英えい語ごを覚おぼえられるという話はなしを聞きいたことがある。

  I've heard that you can learn English through sleep-learning.

• 彼かれは睡すい眠みん学がく習しゅうの効こう果かに懐かい疑ぎ的てきだ。

  He is skeptical about the effectiveness of hypnopedia.