- a lustrous, hard, brittle, metallic element used in alloy steels for hardness and corrosion resistance, as in stainless steel, and for plating other metals: chromium salts are used as pigments and mordants. Symbol: Cr; atomic weight: 51.996; atomic number: 24; specific gravity: 7.1.
- chrome(def 2).
Origin of chromium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for chromium
Unlike metals like iron, which rusts and corrodes dramatically, chromium remains stable after oxidation and subsequent burial.Why Did It Take So Long For Complex Life To Evolve On Earth? Blame Oxygen.
Matthew R. Francis
November 2, 2014
RockMelt is built on open-source code—the Chromium software created by Google and used for its own Chrome browser.Inside the Secret New Internet Browser
November 7, 2010
When the crucible has cooled a button of chromium will be found in the bottom.
Chromium is a very hard metal of about the same density as iron.
Like chromium, the metals are difficult to prepare in pure condition.
Well, if I don't see him, you let him know about the chromium.All Day September
When, therefore, chromium is not detected in the precipitate, the filtrate should also be examined.Legal Chemistry
- a hard grey metallic element that takes a high polish, occurring principally in chromite: used in steel alloys and electroplating to increase hardness and corrosion-resistance. Symbol: Cr; atomic no: 24; atomic wt: 51.9961; valency: 2, 3, or 6; relative density: 7.18–7.20; melting pt: 1863±20°C; boiling pt: 2672°C
C19: from New Latin, from French: chrome
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
Word Origin and History for chromium
Online Etymology Dictionary, © 2010 Douglas Harper
- A lustrous hard metallic element, resistant to tarnish and corrosion and found primarily in chromite. It is used to harden steel alloys, in decorative platings, and as a pigment in glass. Atomic number 24.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A hard, shiny, steel-gray metallic element that is rust-resistant and does not tarnish easily. It is used to plate other metals, to harden steel, and to make stainless steel and other alloys. Atomic number 24; atomic weight 51.996; melting point 1,890°C; boiling point 2,482°C; specific gravity 7.18; valence 2, 3, 6. See Periodic Table.
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