单词 | gallium |
释义 | gallium[ gal-ee-uhm ] / ˈgæl i əm / noun Chemistry.a rare, steel-gray, trivalent metallic element used in high-temperature thermometers because of its high boiling point (1983°C) and low melting point (30°C). Symbol: Ga; atomic weight: 69.72; atomic number: 31; specific gravity: 5.91 at 20°C. Origin of gallium1870–75; <New Latin, equivalent to Latin gall(us) cock (translation of French coq, from Lecoq de Boisbaudran, 19th-century French chemist) + New Latin -ium-ium Words nearby galliumgallinipper, gallinule, galliot, Gallipoli, gallipot, gallium, gallium-67, gallium-68, gallium arsenide, gallivant, Gällivare Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for galliumBritish Dictionary definitions for galliumgallium / (ˈɡælɪəm) / nouna silvery metallic element that is liquid for a wide temperature range. It occurs in trace amounts in some ores and is used in high-temperature thermometers and low-melting alloys. Gallium arsenide is a semiconductor. Symbol: Ga; atomic no: 31; atomic wt: 69.723; valency: 2 or 3; relative density: 5.904; melting pt: 29.77°C; boiling pt: 2205°C Word Origin for galliumC19: from New Latin, from Latin gallus cock, translation of French coq in the name of its discoverer, Lecoq de Boisbaudran, 19th-century French chemist 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 galliumgallium [ găl′ē-əm ] n. Symbol GaA rare metallic element that is liquid near room temperature and is found as a trace element in coal, bauxite, and other minerals. Atomic number 31. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for galliumgallium [ găl′ē-əm ] GaA rare, silvery metallic element that is found as a trace element in coal, in bauxite, and in several minerals. It is liquid near room temperature and expands when it solidifies. It is used in thermometers and semiconductors. Atomic number 31; atomic weight 69.72; melting point 29.78°C; boiling point 2,403°C; specific gravity 5.907; valence 2, 3. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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