| | - Cheboygan
- city, seat (1853) of Cheboygan county, northern Michigan, U.S. The city lies along the Cheboygan River as it enters Lake Huron near the eastern end of the Straits of Mackinac. ...
- Chebyshev's inequality
- in probability theory, a theorem that characterizes the dispersion of data away from its mean (average). The general theorem is attributed to the 19th-century Russian mathematician Pafnuty Chebyshev, though credit ...
- Chebyshev, Pafnuty Lvovich
- founder of the St. Petersburg mathematical school (sometimes called the Chebyshev school), who is remembered primarily for his work on the theory of prime numbers and on the approximation of ...
- Chechaouene
- Muslim holy city, northern Morocco, situated in the Rif mountain range. Founded in 1471 by the warrior Abu Youma and later moved by Sidi Ali ibn Rachid to its present ...
- Chechnya
- republic in southwestern Russia, situated on the northern flank of the Greater Caucasus range. Chechnya is bordered by Russia proper on the north, Dagestan republic on the east and southeast, ...
- check
- bill of exchange drawn on a bank and payable on demand; it has become the chief form of money in the domestic commerce of developed countries. As a written order ...
- checkered beetle
- any of the approximately 3,000 species of the insect family Cleridae (order Coleoptera). Checkered beetles occur throughout the world, mainly in the tropics; the common name derives from their markings ...
- checkers
- board game, one of the world's oldest games. Checkers is played by two persons who oppose each other across a board of 64 light and dark squares, the same as ...
- checkerwork
- in architecture, masonry built of two materials, usually stone and flint or stone and brick, so arranged as to make a checkerboard pattern and to give variety in texture and ...
- checks and balances
- principle of government under which separate branches are empowered to prevent actions by other branches and are induced to share power. Checks and balances are applied primarily in constitutional governments. ...
- Cheddar
- village ("parish"), Sedgemoor district, administrative and historic county of Somerset, England, at the mouth of a spectacular limestone gorge in the Mendip Hills. The gorge (now owned by the National ...
- cheddar
- hard cow's-milk cheese named for the district of its origin in the southwestern county of Somerset, England. Cheddar is one of England's oldest cheeses. The original, so-called farmhouse variety remains ...
- Chediak-Higashi syndrome
- a rare inherited childhood disease characterized by the inability of white blood cells called phagocytes to destroy invading microorganisms.
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