(organic chemistry) Any of several forms of vitamin B₁₂ depending on the upper axial ligand of the cobalt ion.

plural of cobalamine

(chemistry) Any of several crystalline materials, containing a triangular lattice of CoO₂ˣ⁻ anions, that are electrical conductors and have unusual magnetic and thermoelectric properties.

plural of cobaltate

(biochemistry) Alternative spelling of cobalamin

(mineralogy) A rare gray mineral, a mixed sulfide and arsenide of cobalt and iron with the chemical formula CoAsS; it is an ore of cobalt.

(inorganic chemistry) A salt of divalent cobalt and the sulfate radical, CoSO₄.

(inorganic chemistry) The trivalent complex anion Co(NO₂)₆³⁻ (hexanitritocobaltate(III)), or any salt containing this anion

(medicine) radiation therapy that uses radioactive cobalt-60 as a source

plural of cobaltinitrite