Micropegmatite
Pronunciation : Mi`cro*peg"ma*tite
Part of Speech : n.
Etymology : [Micro- + pegmatite.] (Min.)
Definition : Defn: A rock showing under the microscope the structure of a graphic granite (pegmatite). -- Mi`cro*peg`ma*tit"ic, a.
Source : Webster's Unabridged Dictionary, 1913