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

Dictionary Entries Near copper

Cite this Entry

“Copper.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/copper. Accessed 30 Jan. 2023.

Kids Definition

copper

1 of 2 noun
cop·​per ˈkäp-ər How to pronounce copper (audio)
1
: a reddish metallic element that is one of the best conductors of heat and electricity see element
2
: a copper or bronze coin
3
chiefly British : a large copper kettle or boiler
4
: any of various small butterflies with usually copper-colored wings
coppery
ˈkäp-(ə-)rē
adjective

copper

2 of 2 noun

Medical Definition

copper

noun
cop·​per ˈkäp-ər How to pronounce copper (audio)
often attributive
: a common reddish metallic element that is ductile and malleable and one of the best conductors of heat and electricity
symbol Cu
see Chemical Elements Table
coppery adjective

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