Definify.com
Webster 1913 Edition
Thionic
Thi-on′ic
,Adj.
[Gr. [GREEK] brimstone, sulphur.]
(Chem.)
Of or pertaining to sulphur; containing or resembling sulphur; specifically, designating certain of the thio compounds;
as, the
. Cf. thionic
acidsDithionic
, Trithionic
, Tetrathionic
, etc.