| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024nick•el /ˈnɪkəl/USA pronunciation n. - Chemistry[uncountable] a hard, silvery white metallic element, used in combinations of metals.
- Currency[countable] a coin of the U.S., equal to five cents.
adj. [before a noun] - Slang Termscosting five dollars:a nickel bag of heroin.
WordReference Random House Unabridged Dictionary of American English © 2024nick•el (nik′əl),USA pronunciation n., v., -eled, -el•ing or (esp. Brit.) -elled, -el•ling, adj. n. - Chemistrya 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. Symbol: Ni;
at. wt.: 58.71;
at. no.: 28;
sp. gr.: 8.9 at 20°C. - Currencya cupronickel coin of the U.S., the 20th part of a dollar, equal to five cents.
- Currencya nickel coin of Canada, the 20th part of a dollar, equal to five cents.
v.t. - Metallurgyto cover or coat with nickel;
nickel-plate.
adj. - Slang Termscosting or worth five dollars:a nickel bag of heroin.
- 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
- Swedish, abstracted from kopparnickel
- 1745–55
Collins Concise English Dictionary © HarperCollins Publishers:: nickel /ˈnɪkəl/ n - 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
- a US and Canadian coin and monetary unit worth five cents
vb ( -els, -elling, -elled) ( US -els, -eling, -eled)- (transitive) to plate with nickel
Etymology: 18th Century: shortened form of German Kupfernickel niccolite, literally: copper demon, so called by miners because it was mistakenly thought to contain copper |