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Definitions from WordNet

Definitions from the Web

Groundmass

Description:

The term "groundmass" refers to the fine-grained matrix in which larger mineral crystals, rock fragments, or other materials are embedded within an igneous, metamorphic, or sedimentary rock.

Sample Sentences:

• The groundmass of this basaltic rock consists mainly of fine-grained minerals.
• In this granite, the groundmass comprises quartz, feldspar, and biotite.
• The groundmass of the sedimentary rock contains small fragments of various minerals cemented together.

Parts of Speech:

• Noun: The groundmass is an essential component of many types of rocks.

Senses:

• Sense 1: The fine-grained matrix in igneous rocks.
• Sense 2: The fine-grained matrix in metamorphic rocks.
• Sense 3: The fine-grained matrix in sedimentary rocks.

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• Igneous Rocks
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