窒ちっ素そ代たい謝しゃMeaningsNoun1. nitrogen metabolismKanji used窒suffocate素elementary代substitute謝apologizePitch accentちっそたいしゃComposed of窒ちっ素そnitrogen (N)Noun代たい謝しゃmetabolism; renewal; regeneration; replacing the old with the newNoun