両生類(りょうせいるい)

りょうせいるい
noun
amphibian
1. amphibian
Cold-blooded vertebrate animals that live both in water and on land, typically having an aquatic larval stage. The class Amphibia in biological classification.
蛙(かえる)は両生類(りょうせいるい)です。
Frogs are amphibians.
両生類(りょうせいるい)は水中(すいちゅう)と陸上(りくじょう)の両方(りょうほう)で生活(せいかつ)できます。
Amphibians can live both in water and on land.
両生類(りょうせいるい)は環境(かんきょう)変化(へんか)に敏感(びんかん)です。
Amphibians are sensitive to environmental changes.

両生類(りょうせいるい) is a biological classification term. Composed of 両生(りょうせい) ("both-living," i.e., amphibious) + 類(るい) (class/type).

EXAMPLES:

  • 蛙(かえる): frog
  • 蝦蟇(がま): toad
  • 山椒魚(さんしょううお): salamander
  • イモリ: newt

RELATED CLASSIFICATION TERMS:

  • 哺乳類(ほにゅうるい): mammals
  • 爬虫類(はちゅうるい): reptiles
  • 鳥類(ちょうるい): birds
  • 魚類(ぎょるい): fish

USAGE:
Amphibians go through metamorphosis from aquatic larvae (like {おたまじゃくし}, tadpoles) to terrestrial adults. This word appears in science classes and nature documentaries.

Related Words

Related: 哺乳類(ほにゅうるい) (mammals)
Related: 爬虫類(はちゅうるい) (reptiles)
Related: 魚類(ぎょるい) (fish)
Related: 鳥類(ちょうるい) (birds)
general
Added 2026.1.14 22:31 · Revised 2026.4.10 21:45
04500/04924_ryouseirui