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cobalt

American  
[koh-bawlt] / ˈkoʊ bɔlt /

noun

  1. a silver-white metallic element with a faint pinkish tinge, occurring in compounds whose silicates afford important blue coloring substances for ceramics. Co; 58.933; 27; 8.9 at 20°C.

cobalt British  
/ ˈkəʊbɔːlt /

noun

  1. a brittle hard silvery-white element that is a ferromagnetic metal: occurs principally in cobaltite and smaltite and is widely used in alloys. The radioisotope cobalt-60 , with a half-life of 5.3 years, is used in radiotherapy and as a tracer. Symbol: Co; atomic no: 27; atomic wt: 58.93320; valency: 2 or 3; relative density: 8.9; melting pt: 1495°C; boiling pt: 2928°C

"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
cobalt Scientific  
/ kō′bôlt′ /

  1. 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.

  2. See Periodic Table

Etymology

Origin of cobalt

1675–85; < German Kobalt, variant of Kobold kobold

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The team tested this idea by combining a compound made of manganese, cobalt, and germanium with another made of manganese, cobalt, and arsenic.

From Science Daily

Analysts at Cowen said a combined company would be a leader in iron ore, copper, aluminum, lithium, cobalt, nickel, zinc, thermal coal and steel-making coal.

From MarketWatch

Analysts at Cowen said a combined company would be a leader in iron ore, copper, aluminum, lithium, cobalt, nickel, zinc, thermal coal and steel-making coal.

From MarketWatch

But Glencore said it needed the cash flow from its coal mines to invest in raw materials useful for the green transition, such as copper and cobalt.

From Barron's

In particular, the study reshapes the understanding of how cobalt and manganese influence mechanical failure inside batteries.

From Science Daily

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.