Diorite
Pronunciation : Di"o*rite
Part of Speech : n.
Etymology : [Cf. F. diorite. See Diorism.] (Min.)
Definition : Defn: An igneous, crystalline in structure, consisting essentially of a triclinic feldspar and hornblende. It includes part of what was called greenstone.
Source : Webster's Unabridged Dictionary, 1913