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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 gallium

1870–75; <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 gallium

gallinipper, 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 gallium

British Dictionary definitions for gallium

gallium
/ (ˈɡælɪəm) /

noun

a 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 gallium

C19: 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 gallium

gallium
[ gălē-əm ]

n. Symbol Ga

A 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 gallium

gallium
[ gălē-əm ]

Ga

A 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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更新时间:2024/11/12 2:08:15