| pumice |
a light glass formed on the surface of some lavas; used as an abrasive rub with pumice, in order to clean or to smoothen
출처: wordnet.princeton.edu/perl/webwn
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|---|---|
| pumice |
A frothy volcanic glass. (See page(s) 86)
출처: highered.mcgraw-hill.com/sites/0072402466/student_...
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| pumice |
An excessively cellular, glassy lava. It has the same basic composition of rhyolite. It is best described as "volcanic froth".
출처: www.nps.gov/crla/pumice.htm
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| pumice |
A light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. Commonly perceived as lumps or fragments of pea size and larger but can also occur abundantly as ash-size particles. Because of its numerous gas bubbles, pumice commonly floats on water.
출처: www.msnucleus.org/membership/html/jh/earth/diction...
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| pumice |
the part with the highest elevation, esp. of a mountain; peak.
출처: www.teach-nology.com/worksheets/science/volcano/qu...
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