- a malleable, ductile, metallic element having a characteristic reddish-brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu; atomic weight: 63.54; atomic number: 29; specific gravity: 8.92 at 20°C.
- a metallic reddish brown.
- a coin composed of copper, bronze, or the like, as the U.S. cent or the British penny.
- any of several butterflies of the family Lycaenidae, as Lycaena hypophleas (American copper), having copper-colored wings spotted and edged with black.
- a container made of copper.
- a tool partly or wholly made of copper: a soldering copper.
- British. a large kettle, now usually made of iron, used for cooking or to boil laundry.
- made of copper: copper kettles.
- reddish-brown; coppery: The copper sun sank into the sea.
- to cover, coat, or sheathe with copper.
- Informal. hedge(def 6).
Origin of copper1
- a police officer.
Origin of copper2
Examples from the Web for copper
You can find fourteen of these copper creations, all initially containing 3,900 liters of liquid apiece, on the Macallan estate.
But the copper performs another important function: working as a catalyst in the distillation process.
Why the size and shape of a copper still is at the core of whisky distillation.
After all, there are much larger risks in this world than traces of copper in your water.Are Water Filters B.S.?
August 19, 2014
Paul Smith filled the Bourse de Commerce with its copper cupola in June for his menswear show.Paris’s Secret Fashion Week Haunts
July 8, 2014
"And copper's up two points to-day," said Percival, cheerfully.
The movements in Copper and Cordage Trust stocks are purely speculative.
Here's copper just closed at 93, after opening strong this morning at 105.
"Why, he copped the copper's kale," Aggie translated, glibly.Within the Law
Since then we have greatly diminished the iron and increased the copper.
- a malleable ductile reddish metallic element occurring as the free metal, copper glance, and copper pyrites: used as an electrical and thermal conductor and in such alloys as brass and bronze. Symbol: Cu; atomic no: 29; atomic wt: 63.546; valency: 1 or 2; relative density: 8.96; melting pt: 1084.87±+0.2°C; boiling pt: 2563°CRelated adjectives: cupric, cuprous Related prefix: cupro-
- (as modifier)a copper coin
- the reddish-brown colour of copper
- (as adjective)copper hair
- informal any copper or bronze coin
- mainly British a large vessel, formerly of copper, used for boiling or washing
- any of various small widely distributed butterflies of the genera Lycaena, Heodes, etc, typically having reddish-brown wings: family Lycaenidae
- (tr) to coat or cover with copper
- a slang word for policeman Often shortened to: cop
Word Origin and History for copper
malleable metallic element, Old English coper, from West Germanic *kupar (cf. Middle Dutch koper, Old Norse koparr, Old High German kupfar), from Late Latin cuprum, contraction of Latin Cyprium (aes) "Cyprian (metal)," after Greek Kyprios "Cyprus" (see Cyprus).
Latin aes originally was "copper," but this was extended to its alloy with tin, bronze, and as this was far more extensively used than pure copper, the word's primary sense shifted to the alloy and a new word evolved for "copper," from the Latin form of the name of the island of Cyprus, where copper was mined. Aes passed into Germanic (which originally did not distinguish copper from its alloys) and became English ore. In Latin, aes was the common word for "cash, coin, debt, wages" in many figurative expressions. Chemical symbol Cu is from cuprum.
"policeman," 1846; agent noun from cop (v.).
- A malleable metallic trace element used in its salt forms as an astringent, deodorant, and antifungal, and whose radioisotope is used in brain scans and for diagnosing Wilson's disease. Atomic number 29.
- A reddish-brown, ductile, malleable metallic element that is an excellent conductor of heat and electricity. It is widely used for electrical wires, water pipes, and rust-resistant parts, either in its pure form or in alloys such as brass and bronze. Atomic number 29; atomic weight 63.546; melting point 1,083°C; boiling point 2,595°C; specific gravity 8.96; valence 1, 2. See Periodic Table. See Note at element.
Copper and Stone Age
- See Chalcolithic.