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Pronunciation varies by accent · adjective
A textural term used in petrographic classification of volcanic rocks, referring to a volcanic rock groundmass, which is visible only under magnification with a petrographic microscope, that contains a mixture of very fine-grained mineral crystals either mixed with natural volcanic glass, or surrounded by thin bands of volcanic glass..
Use hyalopilitic when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hyalopilitic means A textural term used in petrographic classification of volcanic rocks, referring to a volcanic rock groundmass, which is visible only under magnification with a petrographic microscope, that contains a mixture of very fine-grained mineral crystals either mixed with natural volcanic glass, or surrounded by thin bands of volcanic glass..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hyalopilitic where its definition matches the intended context.
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