冬眠

とうみん

hibernation, winter sleep

JLPT N1

Character Breakdown

Meaning and Usage

"冬眠" (とうみん) refers to the state of hibernation or winter sleep, primarily used to describe animals that enter a dormant state during cold seasons to conserve energy.

Common Contexts

This word is often used in biology or nature-related conversations, especially when discussing bears, bats, or other animals that undergo significant metabolic slowdown in winter.

Collocations and Patterns

  • 冬眠する: to hibernate
  • 冬眠中: during hibernation
  • 冬眠から目覚める: to wake up from hibernation

These phrases are useful for describing the process and phases of hibernation.

Register and Nuance

"冬眠" is a neutral, scientific term and is appropriate in both formal and informal contexts when discussing animal behavior.

Learner Tips

A common confusion is mixing "冬眠" with "仮眠" (short nap). Remember, "冬眠" is a long-term seasonal sleep, not a brief rest. Use it only for animals or metaphorically for long inactivity.

Example Sentences

くまはふゆになるととうみんします。

Bears hibernate when winter comes.

とうみんちゅうのどうぶつはたいおんがさがり、かつどうがほとんどとまります。

Animals in hibernation lower their body temperature and almost stop activity.

とうみんからめざめると、どうぶつはえさをさがしはじめます。

When animals wake up from hibernation, they start looking for food.