18-letter words containing r, u
- centre of pressure — the point in a body at which the resultant pressure acts when the body is immersed in a fluid
- 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
- chambered nautilus — nautilus (def 1).
- character-building — improving certain good or useful traits in a person's character, esp self-reliance, endurance, and courage
- charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
- charge of quarters — a member of the armed forces who handles administration in his or her unit, esp after duty hours
- charismatic church — a church that emphasizes communal prayer and the charismatic gifts of speaking in tongues, healing, etc
- chartered surveyor — (in Britain) a surveyor who is registered with the Royal Institution of Chartered Surveyors as having the qualifications, training, and experience to satisfy their professional requirements
- 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 revolution — the overthrow of the last Manchu emperor and the establishment of a republic in China (1911–12)
- chlorofluorocarbon — Chlorofluorocarbons are the same as CFCs.
- chlorohydroquinone — a white to light-tan, crystalline, water-soluble solid, C 6 H 3 Cl(OH) 2 , used chiefly in organic synthesis and as a developer in photography.
- chocolate-coloured — dark brown
- church of scotland — the established church in Scotland, Calvinist in doctrine and Presbyterian in constitution
- 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
- circular dichroism — selective absorption of one of the two possible circular polarizations of light.
- 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
- circumnavigational — Relating to circumnavigation.
- 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.
- claustrophobically — In a claustrophobic way.
- clew down (or up) — to lower (or raise) a sail by means of clew lines
- closure conversion — (theory) The transformation of continuation passing style code so that the only free variables of functions are names of other functions. See also Lambda lifting.
- coast-guard cutter — a cutter used by the U.S. Coast Guard.
- coastguard station — the headquarters or local offices of a coastguard
- coitus interruptus — the deliberate withdrawal of the penis from the vagina before ejaculation
- colossus of rhodes — a giant bronze statue of Apollo built on Rhodes in about 292–280 bc; destroyed by an earthquake in 225 bc; one of the Seven Wonders of the World
- colour commentator — a sports celebrity who works as part of a commentary team
- colour photography — the art or process of taking and developing photographs in colour
- colour temperature — the temperature of a black-body radiator at which it would emit radiation of the same chromaticity as the light under consideration
- combination square — an adjustable device for carpenters, used as a try square, miter square, level, etc.
- 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
- common user access — (programming) (CUA) The user interface standard of SAA.
- communication cord — a cord or chain in a train which may be pulled by a passenger to stop the train in an emergency
- community property — the joint ownership of the property of a husband and wife
- complexity measure — (algorithm) A quantity describing the complexity of a computation.
- composition rubber — manufactured rubber
- computer animation — animated film or video that is generated by computers
- computer scientist — a person with advanced knowledge of computers and how they work
- computer telephony — Computer Telephone Integration
- computer-generated — produced by a computer program
- conceptual realism — the doctrine that universals have real and independent existence.
- concrete universal — a principle that necessarily has universal import but is also concrete by virtue of its arising in historical situations.
- concurring opinion — an opinion issued by one or more judges which agrees with the decision reached by the majority of the court, but offers additional or different reasons for reaching that decision
- concussion grenade — a grenade designed to inflict damage by the force of its detonation rather than by the fragmentation of its casing.
- conductivity water — water that has a conductivity of less than 0.043 × 10–6 S cm–1
- configuration item — (jargon) Hardware or software, or an aggregate of both, which is designated by the project configuration manager (or contracting agency) for configuration management.