Definition of COBALT

cobalt

Plural: cobalts

Noun

  • A hard, silvery-white metallic element.
  • a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
  • A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.
  • Cobalt blue.

Examples

  • His tiles, shining with potential, seemed as valuable as cobalt on the Words With Friends board.

Origin / Etymology

From German Kobalt, formerly also Kobald, ‑olt, ‑old, ‑elt, ‑el, apparently the same word as Kobold (“goblin”), from Middle High German, which became also a Harz Mountains silver miners’ term for rock laced with arsenic and sulfur, so called because it degraded the ore and made the miners ill. Doublet of kobold.

Synonyms

atomic number 27, Co

Scrabble Score: 10

cobalt: valid Scrabble (US) TWL Word
cobalt: valid Scrabble Word in Merriam-Webster MW Dictionary
cobalt: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 13

cobalt: valid Words With Friends Word