Diorite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [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]



From WordNet (r) 2.0 [wn]:

  diorite
       n : a granular crystalline intrusive rock