放射能(ほうしゃのう)

ほうしゃのう
noun
radioactivity
1. radioactivity
The property of certain substances to emit radiation through the decay of atomic nuclei. Also used loosely in everyday language to refer to radiation or radioactive contamination in general.
放射能(ほうしゃのう)が検出(けんしゅつ)された。
Radioactivity was detected.
食品(しょくひん)の放射能(ほうしゃのう)検査(けんさ)が行(おこな)われている。
Radioactivity testing of food products is being conducted.
事故(じこ)によって大量(たいりょう)の放射能(ほうしゃのう)が環境(かんきょう)に放出(ほうしゅつ)された。
A large amount of radioactivity was released into the environment due to the accident.

USAGE:
Strictly speaking, 放射能(ほうしゃのう) refers to the property of emitting radiation, while 放射線(ほうしゃせん) refers to the radiation itself, and 放射性(ほうしゃせい)物質(ぶっしつ) refers to radioactive material. However, in everyday Japanese, 放射能(ほうしゃのう) is often used loosely to refer to any of these.

COMMON COLLOCATIONS:

  • 放射能(ほうしゃのう)汚染(おせん): radioactive contamination
  • 放射能(ほうしゃのう)漏(も)れ: radiation leak
  • 放射能(ほうしゃのう)検査(けんさ): radioactivity testing
  • 放射能(ほうしゃのう)レベル: radioactivity level

RELATED TERMS:

  • 放射線(ほうしゃせん): radiation (the rays themselves)
  • 放射性(ほうしゃせい): radioactive (as prefix/adjective)
general
Added 2026.2.23 15:37
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