nickel

American  

[nik-uhl] / ˈnɪk əl /

noun

1. Chemistry. a hard, silvery-white, ductile and malleable metallic element, allied to iron and cobalt, not readily oxidized: used chiefly in alloys, in electroplating, and as a catalyst in organic synthesis. Ni; 58.71; 28; 8.9 at 20°C.

2. a cupronickel coin of the U.S., the 20th part of a dollar, equal to five cents.

3. a nickel coin of Canada, the 20th part of a dollar, equal to five cents.

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verb (used with object)

nickeled, nickeling, nickelled, nickelling

1. to cover or coat with nickel; nickel-plate.

adjective

1. Slang. costing or worth five dollars.

   a nickel bag of heroin.

nickel British  

/ ˈnɪkəl /

noun

1. a malleable ductile silvery-white metallic element that is strong and corrosion-resistant, occurring principally in pentlandite and niccolite: used in alloys, esp in toughening steel, in electroplating, and as a catalyst in organic synthesis. Symbol: Ni; atomic no: 28; atomic wt: 58.6934; valency: 0, 1, 2, or 3; relative density: 8.902; melting pt: 1455°C; boiling pt: 2914°C

2. a US and Canadian coin and monetary unit worth five cents

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verb

1. (tr) to plate with nickel

nickel Scientific  

/ nĭk′əl /

1. A silvery, hard, ductile metallic element that occurs in ores along with iron or magnesium. It resists oxidation and corrosion and is used to make alloys such as stainless steel. It is also used as a coating for other metals. Atomic number 28; atomic weight 58.69; melting point 1,453°C; boiling point 2,732°C; specific gravity 8.902; valence 0, 1, 2, 3.

2. See Periodic Table

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nickel Idioms  

1. see not worth a dime (plugged nickel).

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Usage

What else does nickel mean? Nickel is a slang term for "five" of anything, especially a small bag of drugs costing five dollars or five-year prison sentence.

Etymology

Origin of nickel

1745–55; < Swedish, abstracted from kopparnickel < German Kupfernickel niccolite, literally, copper demon (so called because though looking like copper it yielded none); Nickel demon, special use of short form of Nikolaus proper name. Cf. Old Nick, pumpernickel

Explanation

A nickel is a five-cent coin that got its name from the metal. Nickel is a silver-colored metal that’s strong and resistant to corrosion, so it’s often blended with other metals. Even the coin is part copper. For most people, a nickel means five cents. The coin is mostly copper, but about 25 percent of it is actually nickel. The word comes from the German Kupfernickel, for “copper demon” because miners were tricked as they first thought the nickel was copper. The original US five cent coins were made of silver, and were known as "half dimes." During the Civil War, new coins began to be minted using less expensive materials — thus, the nickel was born.

Example Sentences

The move, which affects other commodities such as nickel and palm oil, could mean supply disruption and price volatility.

From The Wall Street Journal • May 21, 2026

It's one thing when "you're not risking anybody's life" with spaceflight and "you're doing it on your own nickel, more or less," he said.

From Barron's • May 20, 2026

The team paired the new catalyst with a nickel iron anode and found that the system performed better than a leading state-of-the-art cathode, including one based on PGM materials.

From Science Daily • May 18, 2026

The sulfur shortage impacts fertilizers, potentially raising food prices, and increases production costs for copper, nickel, and semiconductors.

From Barron's • Apr. 23, 2026

He served it to her for a nickel instead of a dime and he wanted to give it to her free.

From "The Heart is a Lonely Hunter" by Carson McCullers