'Diorite' definitions:
Definition of 'diorite'
From: WordNet
noun
A granular crystalline intrusive rock
Definition of 'Diorite'
From: GCIDE
- Diorite \Di"o*rite\, n. [Cf. F. diorite. See Diorism.] (Min.) An igneous, crystalline in structure, consisting essentially of a triclinic feldspar and hornblende. It includes part of what was called greenstone. [1913 Webster]