See Also: cobalt(dictionary)
cobalt(encyclopedia)
cobalt(dictionary)
cobalt(medicine)
cobalt-60(medicine)
cobalt-58(medicine)
cobalt-57(medicine)
cobalt radioisotopes(medicine)
cobalt machine(medicine)
cobalt isotopes(medicine)

cobalt (oh)



[Date: 1600-1700; Language: German; Origin: kobalt, from kobold 'goblin'; because goblins were thought to mix it in with silver found in the ground]
a shiny silver-white metal that is often combined with other metals or used to give a blue colour to substances such as glass. It is a chemical element : symbol Co
also cobalt blue
a bright blue-green colour
-- cobalt adj