過か塩えん素そ酸さんMeaningsNoun1. perchloric acidKanji used過surpass something塩salt素elementary酸acidComposed of過かsurplus-; excess-; over-; per- (chemical with more of a certain element than found in other compounds of the same constituents)Prefix塩えん素そchlorine (Cl)Noun酸さんacid; sourness; sour tasteNoun