Methionic
Pronunciation : Meth`i*on"ic
Part of Speech : a.
Etymology : [Methyl + thionic.] (Chem.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913