ethionic acid

noun

ethi·​on·​ic acid

¦e|thē|¦änik-,

¦ē|,

|ˌthī|

: an unstable diacid HO₃SCH₂CH₂OSO₃H known only in solution and obtainable by adding water to ethionic anhydride

Word History

Etymology

ethionic International Scientific Vocabulary e- (from ether) + -thion- (from Greek theion brimstone) + -ic

First Known Use

1844, in the meaning defined above

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