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noun
a silver-white metallic element with a faint pinkish tinge, occurring in compounds whose silicates afford important blue coloring substances for ceramics. Symbol: Co; atomic weight: 58.933; atomic number: 27; specific gravity: 8.9 at 20°C.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Cobalt
is always a great word to know.
So is slumgullion. Does it mean:
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a stew of meat, vegetables, potatoes, etc. |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
cobalt
1680s, from Ger. kobold "goblin," Harz Mountains silver miners' term for rock laced with arsenic and sulphur (so called because it made them ill), from M.H.G. kobe "hut, shed" + *holt "goblin," from hold "gracious, friendly," complimentary words used to avoid the wrath of troublesome beings. The metal
EXPANDwas extracted from this rock. It was known to Paracelsus, but discovery is usually credited to Brandt (1733). Extended to a blue color 1835.
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
cobalt co·balt (kō'bôlt')
n.
Symbol Co
A metallic element, used chiefly for magnetic and high-temperature alloys and in the form of its salts for blue glass and ceramic pigments. Atomic number 27; atomic weight 58.9332; melting point 1,495°C; boiling point 2,930°C; specific gravity 8.9; valence 2, 3.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cobalt  (kō'bôlt') Pronunciation Key
Symbol Co A silvery-white, hard, brittle metallic element that occurs widely in metal ores. It is used to make magnetic alloys, heat-resistant alloys, and blue pigment for ceramics and glass. Atomic number 27; atomic weight 58.9332; melting point 1,495°C; boiling point 2,900°C; specific gravity 8.9; valence 2, 3. See Periodic Table. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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