Metasomatism
Pronunciation : Met`a*so"ma*tism
Part of Speech : n.
Etymology : [Pref. meta- + Gr. (Geol.)
Definition : Defn: An alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine; -- opposed to ordinary metamorphism, as implying simply a recrystallization. -- Met`a*so*mat"ic, a.
Source : Webster's Unabridged Dictionary, 1913