過か硫りゅう酸さんMeaningsNoun1. persulphuric acid; persulfuric acidKanji used過surpass something硫sulphur酸acidPitch accentかりゅうさんかりゅうさんComposed of過かsurplus-; excess-; over-; per- (chemical with more of a certain element than found in other compounds of the same constituents)Prefix硫りゅう酸さんsulfuric acid; sulphuric acidNoun