剤ざい Noun English jmdict 1 noun medicine;agent;(chemical) substance;drug;dose イースト菌はパンを膨らませる際の作用剤だ。 Yeast acts as an agent in making bread rise.
蛍光増白剤けいこうぞうはくざい Noun English jmdict 1 noun (common) (futsuumeishi) fluorescent whitening agent;fluorescent brightener;fluorescent bleach See also: 蛍光染料 (けいこうせんりょう)