19-letter words containing a, c, t, i
- carnot refrigerator — a device operating on the Carnot cycle in which the first temperature is higher than the second.
- cartilaginification — The formation of cartilage.
- cask of amontillado — a short story (1846) by Edgar Allan Poe.
- cast one's lot with — one of a set of objects, as straws or pebbles, drawn or thrown from a container to decide a question or choice by chance.
- cat scratch disease — a disorder characterized by fever and swelling of the lymph glands, caused by a viral infection resulting from the scratch or bite of a cat.
- cat-scratch disease — an ailment characterized by fever and swollen glands and believed to be caused by bacteria transmitted by the scratch or bite of a cat
- catalytic converter — A catalytic converter is a device which is fitted to a car's exhaust to reduce the pollution coming from it.
- catalytic reforming — Catalytic reforming is a process that converts petroleum refinery naphthas to high-octane blending components.
- catch sb in the act — If you catch someone in the act, you discover them doing something wrong or committing a crime.
- caterpillar tractor — a tractor powered by a Caterpillar track
- catherine of aragon — 1485–1536, first wife of Henry VIII of England and mother of Mary I. The annulment of Henry's marriage to her (1533) against papal authority marked an initial stage in the English Reformation
- catherine the great — (Sophia Augusta of Anhalt-Zerbst"Catherine the Great") 1729–96, empress of Russia 1762–96.
- 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 hierarchy — hierarchy (def 6).
- 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
- central reservation — The central reservation is the strip of ground, often covered with grass, that separates the two sides of a major road.
- centrifugal casting — casting that utilizes centrifugal force within a spinning mold to force the metal against the walls.
- cerebral thrombosis — formation of a clot or other blockage in one of the blood vessels of the brain, often followed by neurologic damage; a type of stroke.
- ch'in shih huang ti — Shih Huang Ti.
- chain-reacting pile — nuclear reactor
- chamber of deputies — the lower house of the legislature of certain countries, as Italy.
- 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
- characteristic root — a scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space.
- 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.
- 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.
- chemolithoautotroph — (biology) A chemoautotroph or lithoautotroph.
- 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.
- 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.
- cholecystolithiasis — The presence of a gallstone specifically in the gall bladder.
- choledocholithiasis — The presence of gallstones in the common bile duct.
- 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).
- chromatographically — With regard to, or by by using chromatography.
- chromoblastomycosis — Long-term fungal infection of the skin and subcutaneous tissue.
- cinematographically — a motion-picture projector.
- circle of curvature — the circle with its center on the normal to the concave side of a curve at a given point on the curve and with its radius equal to the radius of curvature at the point.
- 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