チオン酸さんチオンさんMeanings1nounthionic acidchemistryA class of sulfur-containing oxyacids with the general formula H₂SₙO₆. Technical term used in inorganic chemistry.チオン酸さんは硫黄いおうを含ふくむオキソ酸さんの一いっ種しゅである。Thionic acid is a type of sulfur-containing oxyacid.
