Definition of 活性酸素 (かっせいさんそ)

noun
•
reactive oxygen (i.e. free radicals, which can be destructive at high concentrations)(chemistry term)
Related Kanji
活 lively, resuscitation, being helped, living
性 sex, gender, nature
酸 acid, bitterness, sour, tart
素 elementary, principle, naked, uncovered