CADMIUM
cadmium, Cd, atomic number
(noun) a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
Source: WordNet® 3.1
Etymology
Noun
cadmium (countable and uncountable, plural cadmiums)
A chemical element (symbol Cd) with an atomic number of 48: a soft, silvery-white metal.
(countable) A single atom of this element.
Source: Wiktionary
Cad"mi*um, n. Etym: [NL. See Cadmia.] (Chem.)
Definition: A comparatively rare element related to zinc, and occurring in
some zinc ores. It is a white metal, both ductile and malleable.
Symbol Cd. Atomic weight 111.8. It was discovered by Stromeyer in
1817, who named it from its association with zinc or zinc ore.
Cadmium yellow, a compound of cadmium and sulphur, of an intense
yellow color, used as a pigment.
Source: Webster’s Unabridged Dictionary 1913 Edition