a radioactive isotope of cobalt having a mass number of 60 and a half-life of 5.2 years, used chiefly in radiotherapy.
cobalt 60 [(koh-bawlt)]
A radioactive isotope produced when neutrons bombard atoms of the element cobalt.
Note: Cobalt 60 is a common substance used in radiation therapy for cancer.
[koh-bawlt-am-een, -uh-meen] /ˌkoʊ bɔltˈæm in, -əˈmin/ noun 1. any of the various complex derivatives of cobalt containing one or more molecules of ammonia bonded to the cobalt.
noun, Mineralogy. 1. (def 1) noun 1. another name for erythrite (sense 1)
noun 1. a deep blue to a strong greenish-blue color. 2. any of a number of pigments containing an oxide of cobalt. noun 1. Also called Thénard’s blue. any greenish-blue pigment containing cobalt aluminate, usually made by heating cobaltous sulphate, aluminium oxide, and phosphoric acid together 2.
- Cobalt bomb
noun 1. a cobalt-60 device used in radiotherapy 2. a nuclear weapon consisting of a hydrogen bomb encased in cobalt, which releases large quantities of radioactive cobalt-60 into the atmosphere