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18-letter words containing a, c, o, i

  • character disorder — a disorder characterized by socially undesirable behavior, as poor control of impulses or inability to maintain close emotional relationships, and by absence of anxiety or guilt.
  • character encoding — (character)   (Or "character encoding scheme") A mapping between binary data values and character code positions (or "code points"). Early systems stored characters in a variety of ways, e.g. four six-bit characters in a 24-bit word, but around 1960, eight-bit bytes started to become the most common data storage layout, with each character stored in one byte, typically in the ASCII character set. In the case of ASCII, the character encoding is an identity mapping: code position 65 maps to the byte value 65. This is possible because ASCII uses only code positions representable as single bytes, i.e., values between 0 and 255. (US-ASCII only uses values 0 to 127, in fact.) From the late 1990s, there was increased use of larger character sets such as Unicode and many CJK coded character sets. These can represent characters from many languages and more symbols.
  • charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
  • chebyshev equation — Tchebycheff equation.
  • check verification — Check verification is a system that checks national databases of information about individuals to make sure that checks will be honored and fraud is not being committed.
  • checkpoint charlie — a crossing between East and West Berlin during the Cold War
  • chemical potential — a thermodynamic function of a substance in a system that is the partial differential of the Gibbs function of the system with respect to the number of moles of the substance
  • children of israel — the Jews; Hebrews
  • chinese watermelon — a tropical Asian vine, Benincasa hispida, of the gourd family, having a brown, hairy stem, large, solitary, yellow flowers, and white, melonlike fruit.
  • cholangiocarcinoma — (pathology) Cancer of the bile duct.
  • christian brothers — a religious congregation of laymen founded in France in 1684 for the education of the poor
  • christian democrat — a member or supporter of a Christian Democratic party
  • christian endeavor — an organization of young people of various evangelical Protestant churches, formed in 1881 to promote Christian principles and service.
  • christian reformed — of or relating to a Protestant denomination (Christian Reformed Church) organized in the U.S. in 1857 by groups that had seceded from the Dutch Reformed Church.
  • christmas shopping — shopping especially for Christmas presents, but also for Christmas food and drink, and all the other things required over the Christmas period.
  • christmas stocking — A Christmas stocking is a long sock which children hang up on Christmas Eve. During the night, parents fill the stocking with small presents.
  • chromatic printing — printing from blocks or types inked with various colours
  • chromatic semitone — the pitch difference between one note and its sharpened or flattened equivalent
  • chromolithographer — One engaged in chromolithography.
  • chromolithographic — Pertaining to, or made by, chromolithography.
  • chronic alcoholism — long-term alcohol addiction
  • chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
  • cigar-store indian — a wooden statue of an American Indian, traditionally displayed at the entrance of cigar stores.
  • circular dichroism — selective absorption of one of the two possible circular polarizations of light.
  • circulatory system — the system concerned with the transport of blood and lymph, consisting of the heart, blood vessels, lymph vessels, etc
  • circumnavigational — Relating to circumnavigation.
  • citizen journalism — the involvement of non-professionals in reporting news, esp in blogs and other websites
  • citta del vaticano — Vatican City
  • classified section — the part of a publication that contains classified advertising
  • claustrophobically — In a claustrophobic way.
  • clay-colored robin — any of several small Old World birds having a red or reddish breast, especially Erithacus rubecula, of Europe.
  • clinical pathology — the branch of pathology dealing with the study of disease and disease processes by means of chemical, microscopic, and serologic examinations.
  • clobbering machine — pressure to conform with accepted standards
  • closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
  • closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
  • clothing allowance — an amount of money to compensate for the purchase of clothes for work, school, etc
  • coastguard station — the headquarters or local offices of a coastguard
  • cobalt violet deep — a medium to strong purple color.
  • cock-a-leekie soup — a soup made from a fowl boiled with leeks
  • coffee-table music — unadventurous music
  • collagen injection — an injection of collagen into the lip in order to give it a fuller appearance
  • collection charges — the charges levied to cover expenses for the collection of debt
  • collision coverage — Collision coverage is insurance cover for vehicle accidents.
  • collision diameter — the distance between the centers of two colliding molecules when at their closest point of approach.
  • colloidal solution — a mixture having particles of one component, with diameters between 10 −7 and 10 −9 metres, suspended in a continuous phase of another component. The mixture has properties between those of a solution and a fine suspension
  • colonic irrigation — Colonic irrigation is a medical procedure in which a person's colon is washed by injecting water or other fluids into it.
  • combination square — an adjustable device for carpenters, used as a try square, miter square, level, etc.
  • combined operation — a military operation carried out jointly by allied forces
  • combustion chamber — an enclosed space in which combustion takes place, such as the space above the piston in the cylinder head of an internal-combustion engine or the chambers in a gas turbine or rocket engine in which fuel and oxidant burn
  • combustion furnace — a furnace used in the laboratory to carry out elemental analysis of organic compounds
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