英语词汇“groundmass”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	groundmass
释义	groundmass [ ground-mas ] / ˈgraʊndˌmæs / noun the crystalline, granular, or glassy base or matrix of a porphyritic or other igneous rock, in which the more prominent crystals are embedded. Origin of groundmass First recorded in 1875–80; ground¹ + mass Words nearby groundmass ground layer, groundless, groundling, ground log, ground loop, groundmass, ground meristem, groundnut, groundnut oil, ground observer, groundout Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for groundmass Pyroxene, quartz and augite form the groundmass, as seen in section. The Long Labrador Trail\|Dillon Wallace These lavas have groundmass textures that vary from almost holo-crystalline to glassy. Mount Rainier\|Various In a basal flow in Moraine Park, the slaggy and compact phases show differences in phenocrysts as well as in groundmass. Mount Rainier\|Various British Dictionary definitions for groundmass groundmass / (ˈɡraʊndˌmæs) / noun the matrix of igneous rocks, such as porphyry, in which larger crystals (phenocrysts) are embedded Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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