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Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Cobalt" Definition
Word Fact:
German miners who encountered cobalt were no fans of the metallic element. Maybe that was because, when it was heated, it would fill the mine with smoke and kill them—or at least cause permanent health issues. (Cobalt often combines with arsenic and will release the poison if heated.) When the metal was confirmed as a distinct element in 1780, it was given the appropriately malicious name of "kobold," the German word for "goblin."
German miners who encountered cobalt were no fans of the metallic element. Maybe that was because, when it was heated, it would fill the mine with smoke and kill them—or at least cause permanent health issues. (Cobalt often combines with arsenic and will release the poison if heated.) When the metal was confirmed as a distinct element in 1780, it was given the appropriately malicious name of "kobold," the German word for "goblin."
noun
A hard, brittle metallic element, found associated with nickel, silver, lead, copper, and iron ores and resembling nickel and iron in appearance. It is used chiefly for magnetic alloys, 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 2,900°C; specific gravity 8.9; valence 2, 3. See Table at element.
Source: American Heritage Dictionary
A tough lustrous silver-white magnetic metallic element that is related to and occurs with iron and nickel and is used especially in alloys .
Source: Merriam-Webster