The Collaborative International Dictionary
Doleritic
Dolerite \Dol"er*ite\, n. [Gr. dolero`s deceptive, because it was easily confounded with diorite.] (Petrography)
A dark, crystalline, igneous rock, chiefly pyroxene with labradorite.
Coarse-grained basalt.
Diabase.
Any dark, igneous rock composed chiefly of silicates of iron and magnesium with some feldspar. -- Dol`er*it"ic, a.
Doleritic
Doleritic \Dol`er*it"ic\, a.
Of the nature of dolerite; as, much lava is doleritic lava.
--Dana.
Wiktionary
doleritic
a. Of the nature of dolerite.