脱窒 だっちつ noun (common) (futsuumeishi) 脱窒だっちつ Noun English JMdict 1 noun (common) (futsuumeishi) denitrification;denitration 漢字 kanji used 脱 undress, removing 11画 · JLPT N 1 窒 plug up, obstruct 11画 · JLPT N 1