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.
adjective
made of copper: copper kettles.
reddish-brown; coppery: The copper sun sank into the sea.
verb (used with object)
to cover, coat, or sheathe with copper.
Informal. hedge (def. 6).
Origin of copper
1
before 1000; Middle English coper,Old English coper, copor (cognate with Old Norse koparr,German Kupfer) <Late Latin cuprum, for Latin (aes) CypriumCyprian (metal)
Words nearby copper
copolymer, copolymerize, copolymer resin, cop-out, Coppelia, copper, Copper Age, copperah, Copper and Stone Age, copper arsenite, copperas
The commercial products are being developed with copper-based shape memory alloys, which are softer and don’t need as much force as nickel-titanium alloys.
The Shape-Shifting Squeeze Coolers|Marcus Woo|August 24, 2020|Quanta Magazine
One model created at the facility is a knit mask woven through with copper, which is being used in medical facilities and by the US military.
Unmade in America|Tate Ryan-Mosley|August 14, 2020|MIT Technology Review
Others were made using titanium, copper, chromium or zirconium.
Here’s one way to harvest water right out of the air|Sid Perkins|April 24, 2020|Science News For Students
Then he stuffed copper wool into each end to press the powder together.
Converting trash to valuable graphene in a flash|Alison Pearce Stevens|March 20, 2020|Science News For Students
Under some of the previous rules that were in place, these companies had to maintain those copper networks no matter what, even though these networks were not providing consumers high-capacity, high-quality broadband.
Can You Hear Me Now? (Ep. 406)|Stephen J. Dubner|February 20, 2020|Freakonomics
You can find fourteen of these copper creations, all initially containing 3,900 liters of liquid apiece, on the Macallan estate.
When It Comes to Great Whisky, The Size of Your Still Matters||December 9, 2014|DAILY BEAST
But the copper performs another important function: working as a catalyst in the distillation process.
When It Comes to Great Whisky, The Size of Your Still Matters||December 9, 2014|DAILY BEAST
Why the size and shape of a copper still is at the core of whisky distillation.
When It Comes to Great Whisky, The Size of Your Still Matters||December 9, 2014|DAILY BEAST
After all, there are much larger risks in this world than traces of copper in your water.
Are Water Filters B.S.?|Michael Schulson|August 19, 2014|DAILY BEAST
Paul Smith filled the Bourse de Commerce with its copper cupola in June for his menswear show.
As he had no silver mines, he struck the roubles out of copper, of which there was plenty about.
In Love With the Czarina and Other Stories|Mr Jkai
Several specimens of living coral were found attached to the copper sheathing, that which I received being the largest.
Cruise of the 'Alert'|R. W. Coppinger
These are large, deep vessels, provided with copper steam coils in the bottom for the purpose of heating the juice.
Scientific American Supplement, No. 633, February 18, 1888|Various
The skeleton being completed, her planks are then secured by copper or iron nails to the timbers, and riveted.
Every Boy's Book: A Complete Encyclopdia of Sports and Amusements|Various
British Dictionary definitions for copper (1 of 2)
copper1
/ (ˈkɒpə) /
noun
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
informalany copper or bronze coin
mainlyBritisha 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
verb
(tr)to coat or cover with copper
Derived forms of copper
coppery, adjective
Word Origin for copper
Old English coper, from Latin Cyprium aes Cyprian metal, from Greek Kupris Cyprus
British Dictionary definitions for copper (2 of 2)
copper2
/ (ˈkɒpə) /
noun
a slang word for policeman Often shortened to: cop
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.