Type and usage of groundmass from BoostVocab

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groundmass

/'graʊnd,mæs/

Synonyms of groundmass Antonyms of groundmass Examples of groundmass Usage of groundmass Parts of groundmass Definition that contains groundmass Words sounding like groundmass Explanation of groundmass

noun
(geology) the matrix of fine-grained crystalline material in which larger crystals are embedded
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type of:
igneous rock

Definition that contains groundmass

porphyry any igneous rock with crystals embedded in a finer groundmass of minerals
porphyritic rock any igneous rock with crystals embedded in a finer groundmass of minerals
porphyritic (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals