<geology> A dark-coloured, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt.

Origin: Gr. Deceitful; because it was easily confounded with diorite.

(01 Mar 1998)

Doisy, Edward, doko, DOL, dol, dolabriform < Prev | Next > dolicho-, dolichocephalic, dolichocephalism

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