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18-letter words containing a, c, e, i, t

  • celestial guidance — the guidance of a spacecraft or missile by reference to the position of one or more celestial bodies
  • celestial latitude — the angular distance of a celestial body north or south from the ecliptic
  • celestial marriage — the rite or state of marriage, performed in a Mormon temple by the Church of Jesus Christ of Latter-day Saints and believed to continue beyond death.
  • central projection — a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.
  • centralized school — a public school formed from the pupils and teachers of a number of discontinued smaller schools, especially in a rural district.
  • centrifugal clutch — an automatic clutch in which the friction surfaces are engaged by weighted levers acting under centrifugal force at a certain speed of rotation
  • cerenkov radiation — radiation emitted when a charged particle travels through a medium at a speed greater than the speed of light through that medium
  • certification mark — a mark that certifies the origin, material, quality, mode of manufacture, accuracy, or other characteristic of a product or service: “UL” is a certification mark for appliances meeting the safety standards of Underwriters Laboratories, Inc.
  • cesarean (section) — a surgical operation for delivering a baby by cutting through the mother's abdominal and uterine walls
  • chambered nautilus — nautilus (def 1).
  • changement de pied — a jump in which the dancer's feet are reversed from the starting position.
  • 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.
  • character graphics — ASCII art
  • character-building — improving certain good or useful traits in a person's character, esp self-reliance, endurance, and courage
  • characteristically — Also, characteristical. pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive: Red and gold are the characteristic colors of autumn.
  • charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
  • chartered engineer — (in Britain) an engineer who is registered with the Engineering Council as having the scientific and technical knowledge and practical experience to satisfy its professional requirements
  • chattering classes — The chattering classes are people such as journalists, broadcasters, or public figures who comment on events but have little or no influence over them.
  • 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
  • cheval de bataille — a horse used in battle; charger.
  • chicken tetrazzini — diced chicken in a cream sauce, baked in a casserole with noodles and cheese, usually flavored with sherry.
  • chickenheartedness — Alternative form of chicken-heartedness.
  • chinese water deer — a small Chinese or Korean deer, Hydropotes inermis, having tusks and no antlers: introduced into England and France
  • 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.
  • christian brethren — Brother of the Christian Schools.
  • 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.
  • christine de pisan — ?1364–?1430, French poet and prose writer, born in Venice. Her works include ballads, rondeaux, lays, and a biography of Charles V of France
  • chromatic semitone — the pitch difference between one note and its sharpened or flattened equivalent
  • chromolithographer — One engaged in chromolithography.
  • cicatricial tissue — scar tissue.
  • cigar-store indian — a wooden statue of an American Indian, traditionally displayed at the entrance of cigar stores.
  • circular breathing — a technique for sustaining a phrase on a wind instrument, using the cheeks to force air out of the mouth while breathing in through the nose
  • circulating medium — currency serving as a medium of exchange
  • circulatory system — the system concerned with the transport of blood and lymph, consisting of the heart, blood vessels, lymph vessels, etc
  • citizen journalism — the involvement of non-professionals in reporting news, esp in blogs and other websites
  • citizenship papers — the document stating that a naturalized person has been formally declared a citizen
  • citta del vaticano — Vatican City
  • classified section — the part of a publication that contains classified advertising
  • clean as a whistle — If you describe something as clean as a whistle, you mean that it is completely clean.
  • closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
  • clothing allowance — an amount of money to compensate for the purchase of clothes for work, school, etc
  • cobalt violet deep — a medium to strong purple color.
  • coffee-table music — unadventurous music
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