Definitions for diabaseˈdaɪ əˌbeɪs
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Random House Webster's College Dictionary
di•a•baseˈdaɪ əˌbeɪs(n.)
a fine-grained gabbro occurring as minor intrusions.
Category: Petrology
Origin of diabase:
1830–40; < F, =dia- (error for di- two) +basebase1
di`a•ba′sic(adj.)
Wiktionary
diabase(Noun)
A fine-grained igneous rock composed mostly of pyroxene and feldspar
Webster Dictionary
Diabase(noun)
a basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone
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