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TOEFL BNC: 3656 COCA: 5053

copper

1 copper /ˈkɑːpɚ/ noun
plural coppers
1 copper
/ˈkɑːpɚ/
noun
plural coppers
Learner's definition of COPPER
[noncount] : a reddish-brown metal that allows heat and electricity to pass through it easily
often used before another noun常用于另一名词前
[noncount] : a reddish-brown color铜色;红棕色usually used before another noun通常用于另一名词前
see color picture on this page
[count] chiefly British, informal : a copper or bronze coin that has little value铜币;铜钱
compare 2copper

— coppery

/ˈkɑːpəri/ adjective [more coppery; most coppery]
2 copper /ˈkɑːpɚ/ noun
plural coppers
2 copper
/ˈkɑːpɚ/
noun
plural coppers
Learner's definition of COPPER
[count] chiefly British, informal
compare 1copper
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
TOEFL BNC: 3656 COCA: 5053
copper

noun

ADJECTIVE | VERB + COPPER | COPPER + NOUN | PREPOSITION | PHRASES ADJECTIVEpure純銅molten熔化的銅beaten銅箔burnished擦得鋥亮的銅Her hair shone like burnished copper.她的頭髮像擦過的銅一樣亮。VERB + COPPERmine開採銅礦produce產銅contain含銅COPPER + NOUNmine銅礦miner採銅礦工mining, production, smelting採銅;銅產量;煉銅deposit, ore銅礦層;銅礦石alloy銅合金sulphate/sulfate硫酸銅coin銅幣pipe, tube銅管cable, wire銅纜;銅線plate, pot銅盤;銅壺colour/color古銅色PREPOSITIONin copper (= using copper) 用銅She works mainly in copper.她主要用銅創作作品。PHRASESan alloy of copper and sth, an alloy of copper with sth銅和⋯的合金Brass is an alloy of copper and zinc.黃銅是銅和鋅的合金。

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