单词 | pyroxene |
释义 | pyroxene[ pahy-rok-seen, puh-, pahy-rok-seen ] / paɪˈrɒk sin, pə-, ˈpaɪ rɒkˌsin / nounany of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, especially basic igneous rocks. Compare augite, diopside, hypersthene. Origin of pyroxene1790–1800; <French; see pyro-, xeno-; originally supposed to be a foreign substance when found in igneous rocks OTHER WORDS FROM pyroxenepy·rox·en·ic [pahy-rok-sen-ik], /ˌpaɪ rɒkˈsɛn ɪk/, adjectiveWords nearby pyroxenepyrotechnics, pyrotechnist, pyrotic, pyrotoxin, pyrotraumatic dermatitis, pyroxene, pyroxenite, pyroxylin, Pyrrha, pyrrhic, Pyrrhic victory Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for pyroxeneBritish Dictionary definitions for pyroxenepyroxene / (paɪˈrɒksiːn) / nounany of a group of silicate minerals having the general formula ABSi 2 O 6, where A is usually calcium, sodium, magnesium, or iron, and B is usually magnesium, iron, chromium, manganese, or aluminium. Pyroxenes occur in basic igneous rocks and some metamorphic rocks, and have colours ranging from white to dark green or black. They may be monoclinic (clinopyroxenes) or orthorhombic (orthopyroxenes) in crystal structure. Examples are augite (the most important pyroxene), diopside, enstatite, hypersthene, and jadeite Derived forms of pyroxenepyroxenic (ˌpaɪrɒkˈsɛnɪk), adjectiveWord Origin for pyroxeneC19: pyro- + -xene from Greek xenos foreign, because it was mistakenly thought to have originated elsewhere when found in igneous rocks 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 Scientific definitions for pyroxenepyroxene [ pī-rŏk′sēn′ ] Any of a series of dark silicate minerals having the general chemical formula ABSi2O6, where A is either calcium (Ca), sodium (Na), magnesium (Mg), or iron (Fe), and B is either magnesium, iron, chromium (Cr), manganese (Mn), or aluminum (Al). Pyroxenes vary in color from white to dark green or black and are characterized by a rectangular-shaped cross section. They can be either monoclinic or orthorhombic and occur in igneous and metamorphic rocks. The minerals enstatite, diopside, and augite are pyroxenes. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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