nick·el /ˈnɪkəl/ 名詞
1. Chem. A bright silver-white metallic element of atomic number 28. It is of the iron group, and is hard, malleable, and ductile. It occurs combined with sulphur in millerite, with arsenic in the mineral niccolite, and with arsenic and sulphur in nickel glance. Symbol Ni. Atomic weight 58.70.
Note: ☞ On account of its permanence in air and inertness to oxidation, it is used in the smaller coins, for plating iron, brass, etc., for chemical apparatus, and in certain alloys, as german silver. It is magnetic, and is very frequently accompanied by cobalt, both being found in meteoric iron.
2. A small coin made of or containing nickel; esp., a five-cent piece. [Colloq. U.S.]
Nickel silver, an alloy of nickel, copper, and zinc; -- usually called german silver; called also argentan.
n 1: a hard malleable ductile silvery metallic element that is
resistant to corrosion; used in alloys; occurs in
pentlandite and smaltite and garnierite and millerite
[syn: Ni, atomic number 28]
2: a United States coin worth one twentieth of a dollar
3: five dollars worth of a drug; "a nickel bag of drugs"; "a
nickel deck of heroin" [syn: nickel note]
v : plate with nickel; "nickel the plate"
[also: nickelling, nickelled]
Atomic number: 28
Atomic weight: 58.71
Malleable ductile silvery metallic transition element. Discovered by A.F.
Cronstedt in 1751.