cobalt (redirected from cobalts)

co·balt  (kbôlt)

n. Symbol Co

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.

---

[German Kobalt, from Middle High German kobolt, variant of kobold, goblin (from silver miners' belief that cobalt had been placed by goblins who had stolen the silver).]

---

cobalt

Noun

Chem a brittle hard silvery-white metallic element used in alloys Symbol: Co[Middle High German kobolt goblin; from the miners' belief that goblins placed it in the silver ore]

---

cobalt  (kbôlt)

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.

Thesaurus

Noun

1.

cobalt - a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition atomic number 27, Co metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. cobalt 60 - a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy cobaltite - a rare silvery-white mineral; important ore of cobalt smaltite - a grey mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel