18-letter words containing a, c, o, i
- comings and goings — Comings and goings refers to the way people keep arriving at and leaving a particular place.
- commander in chief — Also, Commander in Chief. the supreme commander of the armed forces of a nation or, sometimes, of several allied nations: The president is the Commander in Chief of the U.S. Army, Navy, and Air Force.
- commander-in-chief — A commander-in-chief is a senior officer who is in charge of all the forces in a particular area.
- commanding officer — A commanding officer is an officer who is in charge of a military unit.
- commando operation — a major operation for treatment of cancer of the head and neck, involving removal of many facial structures and subsequent surgical reconstruction
- comme ci, comme ca — so-so
- 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
- commendation medal — a U.S. military decoration awarded for meritorious achievement or service
- 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
- committed facility — an agreement by a bank to provide a customer with funds up to a specified limit at a specified rate of interest
- commodity exchange — an exchange where commodities are traded
- common denominator — In mathematics, a common denominator is a number which can be divided exactly by all the denominators in a group of fractions.
- communication cord — a cord or chain in a train which may be pulled by a passenger to stop the train in an emergency
- communication line — a line carrying communications
- community hospital — (in the US) a local hospital
- community language — a language spoken by members of a minority group or community within a majority language context
- commutation ticket — a ticket entitling the holder to travel over the same route, as on a railroad, a specified number of times at a reduced rate
- comodoro rivadavia — a city in E Argentina.
- compact video disc — a compact laser disc that plays both pictures and sound
- companion planting — the cultivation of different types of plants in close proximity so as to benefit each other, as planting a deer-repellent plant in a flower garden.
- comparative method — a body of procedures and criteria used by linguists to determine whether and how two or more languages are related and to reconstruct forms of their hypothetical parent language.
- comparison shopper — an employee of a retail store hired to visit competing stores in order to gather information regarding styles, quality, prices, etc., of merchandise offered by competitors.
- compartmentalizing — Present participle of compartmentalize.
- compassion fatigue — the inability to react sympathetically to a crisis, disaster, etc, because of overexposure to previous crises, disasters, etc
- compassionlessness — The quality, state, or condition of being compassionless; uncompassion.
- compensation award — an amount of money awarded as compensation in a court case
- compensation order — (in Britain) the requirement of a court that an offender pay compensation for injury, loss, or damage resulting from an offence, either in preference to or as well as a fine
- compensation point — the concentration of atmospheric carbon dioxide at which the rate of carbon dioxide uptake by a photosynthesizing plant is exactly balanced by its rate of carbon dioxide release in respiration and photorespiration
- complementarianism — The doctrine that genders in a society should have complementary roles.
- complexity measure — (algorithm) A quantity describing the complexity of a computation.
- compliance officer — a specialist, usually a lawyer, employed by a financial group operating in a variety of fields and for multiple clients to ensure that no conflict of interest arises and that all obligations and regulations are complied with
- compressor station — A compressor station is a facility with several compressors (= devices that increase the pressure of air or natural gas) and other equipment to pump natural gas under pressure over long distances.
- computer animation — animated film or video that is generated by computers
- concentration camp — A concentration camp is a prison in which large numbers of ordinary people are kept in very bad conditions, usually during a war.
- concentration cell — a galvanic cell consisting of two electrodes of the same metal each in different concentrations of a solution of the same salt of that metal.
- concentration span — the length of time a person can concentrate on something
- conceptual realism — the doctrine that universals have real and independent existence.
- conceptualisations — Plural form of conceptualisation.
- conceptualizations — Plural form of conceptualization.
- concrete universal — a principle that necessarily has universal import but is also concrete by virtue of its arising in historical situations.
- concussion grenade — a grenade designed to inflict damage by the force of its detonation rather than by the fragmentation of its casing.
- condensation point — a point of which every neighborhood contains an uncountable number of points of a given set.
- condensation trail — contrail.
- conditional access — the encryption of television programme transmissions so that only authorized subscribers with suitable decoding apparatus may have access to them
- conditionalization — the derivation from an argument of a conditional statement with the conjunction of the premises as antecedent and the conclusion as consequent. If the argument is valid, conditionalization yields a truth
- 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.
- congregate housing — a type of housing in which each individual or family has a private bedroom or living quarters but shares with other residents a common dining room, recreational room, or other facilities.