亜あ硫りゅう酸さんMeaningsNoun1. sulfurous acid; sulphurous acidKanji used亜Asia硫sulphur酸acidPitch accentありゅうさんありゅうさんComposed of亜あsub-; second-rate; inferior; -ous (indicating a low oxidation state); -ite; Asia; Argentina; ArabiaPrefix硫りゅう酸さんsulfuric acid; sulphuric acidNoun