18-letter words containing a, c, e, l, r
- cellular telephone — a mobile phone
- central government — the government of a state or country
- 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
- cepheid (variable) — any of a class of pulsating, yellow, supergiant stars whose brightness varies in regular periods: from the period-luminosity relation, the distance of such a star can be determined
- cereal leaf beetle — an Old World leaf beetle, Oulema melanopus, introduced into North America in 1962: a serious pest of small grains, especially oats and cereal grasses.
- cerebral dominance — the normal tendency for one half of the brain, usually the left cerebral hemisphere in right-handed people, to exercise more control over certain functions (e.g. handedness and language) than the other
- cervical screening — a screening for cervical cancer
- chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
- chambered nautilus — nautilus (def 1).
- chandelier earring — one of a pair of long and ornate earrings that dangle from the earlobes, usually dropping from more than one level.
- 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.
- 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.
- checkpoint charlie — a crossing between East and West Berlin during the Cold War
- chemical pregnancy — a pregnancy that is confirmed by a pregnancy test but not by clinical signs and terminates before clinical signs can be observed.
- children of israel — the Jews; Hebrews
- children's crusade — a crusade to recover Jerusalem from the Saracens, undertaken in 1212 by thousands of French and German children who perished, were sold into slavery, or were turned back.
- 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.
- chloroacetophenone — a white, crystalline, water-insoluble, poisonous solid, C 8 H 7 ClO, used in solution as a tear gas. Abbreviation: CN.
- chlorobromomethane — a clear, colorless, volatile, nonflammable liquid, CH 2 ClBr, used chiefly as an extinguishing agent in fire extinguishers and as a solvent in organic synthesis.
- chocolate-coloured — dark brown
- chromolithographer — One engaged in chromolithography.
- cicatricial tissue — scar tissue.
- 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
- clark's nutcracker — a nutcracker, Nucifraga columbiana, of western North America, having pale gray plumage and black and white wings and tail.
- classical armenian — the oldest form of the Armenian language according to written sources, in use from the 5th to the 18th century.
- clay-colored robin — any of several small Old World birds having a red or reddish breast, especially Erithacus rubecula, of Europe.
- cleopatra's needle — either of two Egyptian obelisks, originally set up at Heliopolis about 1500 bc: one was moved to the Thames Embankment, London, in 1878, the other to Central Park, New York, in 1880
- climbing hydrangea — a woody vine, Hydrangea anomala, of eastern Asia, having shiny, egg-shaped leaves and flat-topped white flower clusters, and climbing by aerial rootlets.
- 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
- 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.
- color transparency — a positive color image photographically produced on transparent film or glass and viewed by transmitted light, usually by projection.
- colorado red cedar — Rocky Mountain juniper.
- colour commentator — a sports celebrity who works as part of a commentary team
- colour temperature — the temperature of a black-body radiator at which it would emit radiation of the same chromaticity as the light under consideration
- commedia dell'arte — a form of popular comedy developed in Italy during the 16th to 18th centuries, with stock characters such as Punchinello, Harlequin, and Columbine, in situations improvised from a plot outline
- commercial attache — an attaché in an embassy or legation representing the commercial interests of his or her country.
- commercial college — a college providing tuition in commercial skills, such as shorthand and book-keeping
- commercial vehicle — a vehicle for carrying goods or (less commonly) passengers
- compartmentalizing — Present participle of compartmentalize.
- complementarianism — The doctrine that genders in a society should have complementary roles.