What does 放射能 mean?
放射能 is a Japanese noun meaning “radioactivity” in English. It can also be translated as “radiation, radioactive material” depending on context. It is written as 放射能 in kanji, ほうしゃのう in hiragana, and houshanou in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
もう一つの面白いエネルギー源は、放射能の廃棄物質から取り出せる熱である。
Another interesting source of energy is the heat that can be recovered from radioactive waste material.