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coordinate (plural) a pair of numbers that identifies a point on a graph or grid; ordered pair. [3 definitions]
coordination the act of coordinating or the state of being coordinated. [2 definitions]
cop2 (informal) a police officer.
cope1 to handle or deal with in a successful way (often followed by "with").
Copenhagen the capital city of Denmark, on the eastern coast.
copper a reddish brown metal that is one of the chemical elements. Copper is used to make pipes, because it does not easily rust. It is also used to make wires, because it is an excellent conductor of electricity. It can be combined with other metals to make alloys such as brass and bronze. (symbol: Cu) [4 definitions]
copperhead a poisonous snake that has a copper-colored body with darker bands. Copperheads are found in the southeastern United States.
copy something that looks exactly like another. [5 definitions]
coral the hard skeleton of tiny sea animals called corals. Most kinds of corals live in warm tropical oceans, and their thousands of skeletons form reefs and atolls. [3 definitions]
coral reef a structure that rises up from the bottom of the sea and is made up of the hard skeletons of tiny sea animals called corals. Coral reefs are found in warm, shallow sea waters around the world. The largest system of coral reefs is found in the Coral Sea off the northeastern coast of Australia.
Coral Sea a part of the southern Pacific Ocean located off the northwestern coast of Australia. The Coral Sea is the location of the largest collection of coral reefs in the world.
coral snake a small, poisonous snake that has red, yellow, and black bands around its body. It is found in the southwestern part of the United States and in Central and South America.
cord a thick string or strong, thin rope. [4 definitions]
cordial warm and friendly; courteous.
corduroy cloth that has lengthwise ribs. [2 definitions]
core the hard center part of certain fruits. [4 definitions]
cork a kind of oak that has a thick, soft bark. Corks grow near the Mediterranean Sea. [4 definitions]
corkscrew a tool shaped like a spiral that is used to remove corks from bottles. [2 definitions]
corn1 a tall plant that has ears with rows of yellow or white seeds that can be eaten. Corn is a grain that is used for food. [2 definitions]
corncob the woody center of an ear of corn. The corncob holds the kernels.
cornea the clear part of the eyeball's outer coating. The cornea covers the iris and pupil.