单词 | germanium |
释义 | germanium[ jer-mey-nee-uhm ] / dʒərˈmeɪ ni əm / noun Chemistry.a scarce, metallic, grayish-white element, normally tetravalent, used chiefly in transistors. Symbol: Ge; atomic weight: 72.59; atomic number: 32; specific gravity: 5.36 at 20°C. Origin of germaniumFirst recorded in 1885–90; German(y) + -ium Words nearby germaniumgermanic, Germanicus Caesar, Germanism, Germanist, germanite, germanium, German ivy, Germanize, German lapis, German measles, German measles virus Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for germaniumBritish Dictionary definitions for germaniumgermanium / (dʒɜːˈmeɪnɪəm) / nouna brittle crystalline grey element that is a semiconducting metalloid, occurring principally in zinc ores and argyrodite: used in transistors, as a catalyst, and to strengthen and harden alloys. Symbol: Ge; atomic no: 32; atomic wt: 72.61; valency: 2 or 4; relative density: 5.323; melting pt: 938.35°C; boiling pt: 2834°C Word Origin for germaniumC19: New Latin, named after Germany 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 Medical definitions for germaniumgermanium [ jər-mā′nē-əm ] n. Symbol GeA brittle crystalline gray-white metalloid element, used in certain optical glasses and dental alloys and as an intestinal astringent in veterinary medicine. Atomic number 32. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for germaniumgermanium [ jər-mā′nē-əm ] GeA brittle, crystalline, grayish-white metalloid element that is found in coal, in zinc ores, and in several minerals. It is used as a semiconductor and in wide-angle lenses. Atomic number 32; atomic weight 72.59; melting point 937.4°C; boiling point 2,830°C; specific gravity 5.323 (at 25°C); valence 2, 4. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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