19-letter words containing a, c, n, t
- cathodic protection — a technique for protecting metal structures, such as steel ships and pipelines, from electrolytic corrosion by making the structure the cathode in a cell, either by applying an electromotive force directly or by putting it into contact with a more electropositive metal
- cathodoluminescence — luminescence caused by irradiation with electrons (cathode rays)
- cauchy's inequality — Schwarz inequality (def 1).
- celestial longitude — the angular distance measured eastwards from the vernal equinox to the intersection of the ecliptic with the great circle passing through a celestial body and the poles of the ecliptic
- celestial mechanics — the study of the motion of celestial bodies under the influence of gravitational fields
- center of curvature — the center of the circle of curvature.
- central reservation — The central reservation is the strip of ground, often covered with grass, that separates the two sides of a major road.
- centre of curvature — the point on the normal at a given point on a curve on the concave side of the curve whose distance from the point on the curve is equal to the radius of curvature
- centrifugal casting — casting that utilizes centrifugal force within a spinning mold to force the metal against the walls.
- ch'in shih huang ti — Shih Huang Ti.
- chain-reacting pile — nuclear reactor
- champagne lifestyle — a lifestyle involving the enjoyment of luxuries and expensive pleasures
- champagne socialist — a professed socialist who enjoys an extravagant lifestyle
- chandrasekhar limit — the upper limit to the mass of a white dwarf, equal to 1.44 solar masses. A star having a mass above this limit will continue to collapse to form a neutron star
- character generator — a device used in television studios to incorporate text or other symbols into the television screen image.
- character reference — a testimonial from an employer or acquaintance testifying to a person's good character
- chargeable transfer — a transfer of value made as a gift during a person's lifetime that is not covered by a specific exemption and therefore gives rise to liability under inheritance tax
- chartered librarian — (in Britain) a librarian who has obtained a qualification from the Library Association in addition to a degree or diploma in librarianship
- chassis dynamometer — A chassis dynamometer is a piece of test equipment fitted with rollers for the wheels of a vehicle, that is capable of providing drive input and measuring output such as power and torque at the wheels.
- chateauneuf-du-pape — a dry red or white wine from the Rhone valley near Avignon.
- chemical castration — the use of drugs to reduce libido
- chemical weathering — any of the various weathering processes that cause exposed rock to undergo chemical decomposition, changing the chemical and mineralogical composition of the rock: Oxygen and acids are agents in chemical weathering.
- cherenkov radiation — the electromagnetic radiation produced when a charged particle moves through a medium at a greater velocity than the velocity of light in that medium
- chicken-fried steak — a cheap cut of beefsteak that is fried in batter
- chinese finger trap — a child's toy, consisting of a small cylinder of woven straw or paper into which the forefingers are placed, one in each end: the harder one pulls, the more securely the fingers are held.
- chinese tallow tree — tallow tree.
- chlorofluoromethane — any of a series of gaseous or volatile methanes substituted with chlorine and fluorine and containing little or no hydrogen: used as refrigerants and, formerly, as aerosol propellants until scientists became concerned about depletion of the atmospheric ozone layer.
- chloroplatinic acid — a red-brown, crystalline, water-soluble solid, H 2 PtCl 6 ⋅6H 2 O, used chiefly in platinizing glass, metals, and ceramic ware.
- christian democracy — the beliefs, principles, practices, or programme of a Christian Democratic party
- christian scientist — a believer in Christian Science; a member of the Church of Christ, Scientist.
- christian socialist — a member of any of certain European political parties advocating a form of social organization based on Christian and socialistic principles.
- christmas pantomime — pantomime (def 5).
- cinematographically — a motion-picture projector.
- circular definition — a definition in which the definiendum (the expression being defined) or a variant of it appears in the definiens (the expression that defines it).
- circulating capital — the non-permanent raw materials and operating expenses that are used up to produce other goods or services
- circulating decimal — repeating decimal
- circulating library — a small library circulated in turn to a group of schools or other institutions
- circulation manager — the senior manager responsible for the distribution of a newspaper
- claims investigator — A claims investigator is a person who is employed by an insurance company to obtain information necessary to evaluate a claim.
- claims notification — Claims notification is the process of informing an insurance company that a loss has occurred and that the policyholder intends to ask for money as a result.
- clandestine entrant — a person who hides in or on a vehicle as it enters the United Kingdom with the aim of avoiding immigration controls
- class action (suit) — a legal action brought by one or more persons on behalf of themselves and a much larger group, all of whom have the same grounds for action
- classroom assistant — a person whose job is to help a schoolteacher in the classroom
- clemastine fumarate — an antihistamine, C 25 H 30 ClNO 5 , that has drying and some sedative effects, used for symptomatic relief of allergy.
- clinicopathological — of or relating to the combined study of disease symptoms and pathology.
- cloakroom attendant — a person whose job is to check coats and other personal items for visitors to a place
- coca colonization's — to bring (a foreign country) under the influence of U.S. trade, popular culture, and attitudes.
- cock and bull story — an absurd, improbable story presented as the truth: Don't ask him about his ancestry unless you want to hear a cock-and-bull story.
- cock-and-bull story — If you describe something that someone tells you as a cock-and-bull story, you mean that you do not believe it is true.
- coefficient of drag — the ratio of the drag on a body moving through air to the product of the velocity and surface area of the body.