Thi*on"ic (?), a. [Gr. brimstone, sulphur.] Chem.

Of or pertaining to sulphur; containing or resembling sulphur; specifically, designating certain of the thio compounds; as, the thionic acids. Cf. Dithionic, Trithionic, Tetrathionic, etc.

 

© Webster 1913.

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