21-letter words containing o, n, i
- cat on a hot tin roof — a play (1955) by Tennessee Williams.
- category merchandiser — A category merchandiser is a person whose job is to maintain stocks, manage displays and promote sales of a certain product category such as footwear.
- catherine of braganza — 1638–1705, wife of Charles II of England, daughter of John IV of Portugal
- caviar to the general — a thing appealing only to a highly cultivated taste: Hamlet II, ii
- central european time — the standard time adopted by Western European countries one hour ahead of Greenwich Mean Time, corresponding to British Summer Time
- central limit theorem — any of several theorems stating that the sum of a number of random variables obeying certain conditions will assume a normal distribution as the number of variables becomes large.
- certificate of origin — a document stating the name of the country that produced a specified shipment of goods: often required before importation of goods
- character recognition — Character recognition is a process which allows computers to recognize written or printed characters such as numbers or letters and to change them into a form that the computer can use.
- charity commissioners — (in Britain) members of a commission constituted to keep a register of charities and control charitable trusts
- chequebook journalism — Chequebook journalism is the practice of paying people large sums of money for information about crimes or famous people in order to get material for newspaper articles.
- chief warrant officer — a senior-ranking warrant officer in various armed forces
- chinese forget-me-not — an eastern Asian plant, Cynoglossum amabile, of the borage family, having lance-shaped leaves and clustered, showy, blue, pink, or white flowers.
- chinese water torture — a form of torture in which water is made to drip for a long period of time onto a victim's forehead to drive him insane
- chink in one's armour — a small but fatal weakness
- christmas decorations — decorations of different kinds appropriate to Christmas, such as tinsel, candles, images of angels, etc.
- circle of convergence — Mathematics. a circle associated with a given power series such that the series converges for all values of the variable inside the circle and diverges for all values outside it.
- circle of declination — hour circle.
- circular polarization — electromagnetic radiation (esp light) in which the electric field vector describes a circle about the direction of propagation at any point in the path of the radiation
- civil rights movement — campaign for human freedoms
- civilian review board — a quasi-judicial board of appointed or elected citizens that investigates complaints against the police.
- class-relation method — (programming) A design technique based on the concepts of object-oriented programming and the Entity-Relationship model from the French company Softeam.
- clayton antitrust act — an act of Congress in 1914 supplementing the Sherman Antitrust Act and establishing the FTC.
- clement of alexandria — Saint. original name Titus Flavius Clemens. ?150–?215 ad, Greek Christian theologian: head of the catechetical school at Alexandria; teacher of Origen. Feast day: Dec 5
- clinical psychologist — a practitioner of clinical psychology
- clone-and-hack coding — case and paste
- cognitive development — the process of acquiring intelligence and increasingly advanced thought and problem-solving ability from infancy to adulthood.
- coinfectious immunity — premunition.
- collective bargaining — When a trade union engages in collective bargaining, it has talks with an employer about its members' pay and working conditions.
- collimator viewfinder — a type of viewfinder in a camera
- collins street farmer — a businessman who invests in farms, land, etc
- combination principle — Ritz combination principle.
- come in from the cold — to come out of exile, isolation, etc.; resume an active role
- come/get to the point — When someone comes to the point or gets to the point, they start talking about the thing that is most important to them.
- comfortably-furnished — containing comfortable furniture
- commercial television — television companies which make money by selling advertising
- commercial translator — (language) An English-like pre-COBOL language for business data processing.
- commission of inquiry — (in Britain) a group that is set up to investigate something
- committal proceedings — a preliminary hearing in a magistrates' court to decide if there is a case to answer
- committing magistrate — a magistrate who decides if there is enough evidence for a case to proceed
- common carotid artery — the part of a carotid artery between its origin and its point of division into branches.
- communication science — the study of ways in which human beings communicate, including speech, gesture, telecommunication systems, publishing and broadcasting media, etc
- communications server — (operating system) IBM's rebranding of ACF.
- community association — (in Britain) an organization of people and groups working for the common good of a neighbourhood, usually operating under a written constitution registered with the Charity Commissioners
- companionate marriage — a proposed system of trial marriage in which the couple would postpone having children and could be divorced by mutual consent, until a final decision to stay married is reached
- comparative statement — a financial statement with figures arranged in two or more parallel columns, each column representing a fiscal year or other period, used to compare performance between periods.
- comparison microscope — a microscope having two objective lenses and using a system of prisms to form in one eyepiece adjacent images of two different objects.
- compensation neurosis — an unconscious attempt to retain physical or psychological symptoms of illness when some advantage may be obtained (distinguished from malingering).
- competitive advantage — an advantage based on success in competition
- competitive exclusion — the dominance of one species over another when both are competing for the same resources, etc
- completing the square — a method, usually of solving quadratic equations, by which a quadratic expression, as x 2 − 4 x + 3, is written as the sum or difference of a perfect square and a constant, x 2 − 4 x + 4 + 3 − 4 = (x − 2) 2 − 1, by addition and subtraction of appropriate constant terms.