A steel-gray metallic element, atomic no. 27, atomic wt. 58.93320; a bioelement and a constituent of vitamin B12; certain of its compounds are pigments, e.g., c. blue. [Ger. kobalt, goblin or evil spirit]
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Continuous Infusion vs Bolus Alteplase Trial; Continuous Infusion vs Double-Bolus Administration of Alteplase
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co·balt 'kō-.bȯlt n a tough lustrous silver-white magnetic metallic element that is related to and occurs with iron and nickel and is used esp. in alloys symbol Co see ELEMENT (table)
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n.
a metallic element. The artificial radioisotope cobalt-60, or radiocobalt, is a powerful emitter of gamma radiation and is used in the radiation treatment of cancer (see radiotherapy, teletherapy). Cobalt itself forms part of the vitamin B12 molecule. Symbol: Co.
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co·balt (Co) (koґbawlt) [L. cobaltum] a metal, atomic number 27, atomic weight 58.9332; the metal is used in magnetic alloys, and the compounds afford pigments; inhalation of the dust can cause cobaltosis and exposure to the powder may cause dermatitis. See also cobalt poisoning, under poisoning. In animals, a deficiency of this element leads to anemia and an excess of normal dietary requirements leads to erythrocytosis. In humans, although cobalt has been used with limited transient effectiveness to treat the anemia of infection and renal disease, its sole physiologic function is probably as a constituent of vitamin B12.Medical dictionary. 2011.