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TOEFL BNC: 3656 COCA: 5053

copper

1 of 3

noun (1)

cop·​per ˈkä-pər How to pronounce copper (audio)
plural coppers
often attributive
1
: a metallic chemical element that is easily formed into sheets and wires and is one of the best known conductors of heat and electricity see Chemical Elements Table
2
: a coin or token made of copper or bronze
3
chiefly British : a large boiler (as for cooking)
4
: any of a subfamily (Lycaeninae of the family Lycaenidae) of small butterflies with usually copper-colored wings

copper

2 of 3

verb

coppered; coppering ˈkä-p(ə-)riŋ How to pronounce copper (audio)

transitive verb

: to coat or sheathe with or as if with copper

copper

3 of 3

noun (2)

plural coppers

Word History

Etymology

Noun (1)

Middle English coper, from Old English, from Late Latin cuprum copper, from Latin (aes) Cyprium, literally, Cyprian metal

Noun (2)

cop entry 2

First Known Use

Noun (1)

before the 12th century, in the meaning defined at sense 1

Verb

1530, in the meaning defined above

Noun (2)

1846, in the meaning defined above

Time Traveler
The first known use of copper was before the 12th century

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