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Copper | Definition of Copper by Merriam-Webster

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noun (1), often attributive cop·​per | \ ˈkä-pər \

Definition of copper

(Entry 1 of 3)

1 : a common reddish metallic element that is ductile and malleable and is one of the best 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


verb coppered; coppering\ ˈkä-​p(ə-​)riŋ \

Definition of copper (Entry 2 of 3)

transitive verb

: to coat or sheathe with or as if with copper


noun (2)

Definition of copper (Entry 3 of 3)

: police officer

First Known Use of copper

Noun (1)

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


1530, in the meaning defined above

Noun (2)

1846, in the meaning defined above

History and Etymology for copper

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

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copper acetate

Copper Age


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

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noun cop·​per | \ ˈkä-pər \

Kids Definition of copper

1 : a tough reddish metallic chemical element that is one of the best conductors of heat and electricity 2 : a reddish brown color copper hair


noun, often attributive cop·​per | \ ˈkäp-ər \

Medical Definition of copper

: 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

Other Words from copper

coppery \ ˈkäp-​(ə-​)rē \ adjective

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Rhyming Dictionary: Words that rhyme with copper

Thesaurus: All synonyms and antonyms for copper

Spanish Central: Translation of copper

Nglish: Translation of copper for Spanish Speakers

Britannica English: Translation of copper for Arabic Speakers Encyclopedia article about copper

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