What does 廃棄 mean?
廃棄 is a Japanese noun meaning “disposal, abandon, discarding” in English. It can also be translated as “annulment” depending on context. It is written as 廃棄 in kanji, はいき in hiragana, and haiki 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.