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Webster 1913 Edition

Methionic

Methˊi-on′ic

,
Adj.
[
Me
thyl +
thionic
.]
(Chem.)
Of, pertaining to, or designating, a sulphonic (thionic) acid derivative of methane, obtained as a stable white crystalline substance,
CH2.(SO3H)2
, which forms well defined salts.

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