- a white, ductile divalent metallic element resembling tin, used in plating and in making certain alloys. Symbol: Cd; atomic weight: 112.41; atomic number: 48; specific gravity: 8.6 at 20°C.
Origin of cadmium
Examples from the Web for cadmium
When you are not using the Cadmium, it should be put in a vessel of water and kept there.
What Cadmium Is: Cadmium is a metal, just like iron, copper, or lead.
The Cadmium test may be used here to determine when the plates are charged.
With all the sulphides of cadmium a steel palette knife is best avoided.
Under this name chromate of cadmium was introduced some few years back.
- a malleable ductile toxic bluish-white metallic element that occurs in association with zinc ores. It is used in electroplating, alloys, and as a neutron absorber in the control of nuclear fission. Symbol: Cd; atomic no: 48; atomic wt: 112.411; valency: 2; relative density: 8.65; melting pt: 321.1°C; boiling pt: 767°C
Word Origin and History for cadmium
bluish-white metal, 1822, discovered 1817 by German scientist Friedrich Strohmeyer, coined in Modern Latin from cadmia, a word used by ancient naturalists for various earths and oxides (especially zinc carbonate), from Greek kadmeia (ge) "Cadmean (earth)," from Kadmos "Cadmus," legendary founder of Boeotian Thebes. So called because the earth was first found in the vicinity of Thebes (Kadmeioi was an alternative name for "Thebans" since the time of Homer).
- A soft metallic element occurring primarily in zinc, copper, and lead ores that is used in low-friction fatigue-resistant alloys, solders, batteries, nuclear reactor shields, and electroplating. Atomic number 48.
- A rare, soft, bluish-white metallic element that occurs mainly in zinc, copper, and lead ores. Cadmium is plated onto other metals and alloys to prevent corrosion, and it is used in rechargeable batteries and in nuclear control rods as a neutron absorber. Atomic number 48; atomic weight 112.41; melting point 320.9°C; boiling point 765°C; specific gravity 8.65; valence 2. See Periodic Table.