GROUNDMASS

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

(geology) the matrix of fine-grained crystalline material in which larger crystals are embedded

Classified under:

Nouns denoting substances

Hypernyms ("groundmass" is a kind of...):

igneous rock (rock formed by the solidification of molten magma)

Domain category:

geology (a science that deals with the history of the earth as recorded in rocks)

Holonyms ("groundmass" is a substance of...):

porphyritic rock; porphyry (any igneous rock with crystals embedded in a finer groundmass of minerals)

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