groundmass
noun
ground·mass
ˈgrau̇n(d)-ˌmas 
: the fine-grained or glassy base of a porphyry in which the larger distinct crystals are embedded
Examples of groundmass in a Sentence
Recent Examples on the Web
Can instances where the composition of melt in inclusions differs significantly from the composition of the groundmass surrounding the same crystal be evidence of mixing?
—
Erik Klemetti, Discover Magazine, 22 Dec. 2010
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Erik Klemetti, Discover Magazine, 22 Dec. 2010
Dictionary Entries Near groundmass
Cite this Entry
“Groundmass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/groundmass. Accessed 22 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share