海洋無酸素事変 かいようむさんそじへん Meanings Noun Oceanic Anoxic Event; Ocean Anoxic Event; OAE Kanji 海 sea. Read as カイ. 洋 ocean. Read as ヨウ. 無 without 酸 acid. Read as サン. 素 element 事 matter 変 change. Read as ヘン. Jinuma: Japanese Dictionary · Word lists