肺(はい)

はい

noun

lung, lungs

1. lung, lungs

The respiratory organ in the chest. Used in both everyday and medical contexts.

肺(はい)で呼吸(こきゅう)する。

To breathe with the lungs.

肺(はい)のレントゲンを撮(と)った。

I had an X-ray of my lungs taken.

長年(ながねん)の喫煙(きつえん)で肺(はい)が弱(よわ)っている。

My lungs are weakened from years of smoking.

肺(はい) is the organ responsible for breathing. Humans have two lungs (左右(さゆう)の肺(はい)).

Compounds

肺炎(はいえん): pneumonia
肺(はい)がん: lung cancer
肺活量(はいかつりょう): lung capacity (vital capacity)
肺(はい)のレントゲン: lung X-ray
肺結核(はいけっかく): pulmonary tuberculosis

Common expressions

肺(はい)が弱(よわ)い: to have weak lungs
肺(はい)に水(みず)がたまる: fluid in the lungs
肺(はい)を鍛(きた)える: to strengthen the lungs

Related words

心臓(しんぞう): heart
気管(きかん): trachea, windpipe
気管支(きかんし): bronchi
横隔膜(おうかくまく): diaphragm

Related Words

Related: 心臓(しんぞう) (heart)

Related: 気管(きかん) (trachea, windpipe)

Related: 横隔膜(おうかくまく) (diaphragm)

Related: 胸(むね) (chest, breast)

general

Added 2026.2.21 11:56 · Revised 2026.10.15 10:20

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