18-letter words containing o, c, i, d, e, n
- 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.
- chrétien de troyes — 12th century, French poet, who wrote the five Arthurian romances Erec; Cligès; Lancelot, le chevalier de la charette; Yvain, le chevalier au lion; and Perceval, le conte del Graal (?1155–?1190), the first courtly romances
- christian democrat — a member or supporter of a Christian Democratic party
- christian endeavor — an organization of young people of various evangelical Protestant churches, formed in 1881 to promote Christian principles and service.
- christian reformed — of or relating to a Protestant denomination (Christian Reformed Church) organized in the U.S. in 1857 by groups that had seceded from the Dutch Reformed Church.
- cigar-store indian — a wooden statue of an American Indian, traditionally displayed at the entrance of cigar stores.
- citta del vaticano — Vatican City
- civil disobedience — Civil disobedience is the refusal by ordinary people in a country to obey laws or pay taxes, usually as a protest.
- classified section — the part of a publication that contains classified advertising
- clay-colored robin — any of several small Old World birds having a red or reddish breast, especially Erithacus rubecula, of Europe.
- closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
- closed-box testing — functional testing
- coiled tubing unit — A coiled tubing unit is all of the equipment needed to carry out coiled tubing drilling.
- collision diameter — the distance between the centers of two colliding molecules when at their closest point of approach.
- combined operation — a military operation carried out jointly by allied forces
- come down the pike — When something comes down the pike, it happens or occurs.
- 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
- commendation medal — a U.S. military decoration awarded for meritorious achievement or service
- 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.
- community medicine — medical services for a particular area
- 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
- 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
- conditioned reflex — a reflex in which the response (e.g., secretion of saliva in a dog) is occasioned by a secondary stimulus (e.g., the ringing of a bell) repeatedly associated with the primary stimulus (e.g., the sight of meat)
- conductivity water — water that has a conductivity of less than 0.043 × 10–6 S cm–1
- conjugated protein — a biochemical compound consisting of a sequence of amino acids making up a simple protein to which another nonprotein group (a prosthetic group), such as a carbohydrate or lipid group, is attached
- conservation grade — relating to food produced using traditional methods where possible, and following strict specifications regarding animal feeds and welfare, the use of chemical fertilizers, wildlife conservation, and land management
- considered harmful — (programming, humour) A type of phrase based on the title of Edsger W. Dijkstra's famous note in the March 1968 Communications of the ACM, "Goto Statement Considered Harmful", which fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will (by policy) no longer print articles taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies bore titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke.
- constitutionalized — Simple past tense and past participle of constitutionalize.
- contact dermatitis — dermatitis caused by direct contact with an irritating substance, as an allergen or chemical
- continental divide — the watershed of a continent, esp (often caps.) the principal watershed of North America, formed by the Rocky Mountains
- continental shield — any of the large, low-lying areas in the Earth's crust that are composed of Precambrian crystalline rocks
- continued fraction — a number plus a fraction whose denominator contains a number and a fraction whose denominator contains a number and a fraction, and so on
- cooling degree-day — a degree-day above the standard temperature of 75°F (24°C), used in estimating the energy requirements for air conditioning and refrigeration.
- cooling-off period — A cooling-off period is an agreed period of time during which two sides with opposing views try to resolve a dispute before taking any serious action.
- cordillera central — a mountain range in Colombia: part of the Andes. Highest peak, Huila, 18,700 feet (5700 meters).
- corporate identity — business brand
- counter-adaptation — the act of adapting.
- counter-productive — Something that is counter-productive achieves the opposite result from the one that you want to achieve.
- countryside agency — (in England) a government agency that promotes the conservation and enjoyment of the countryside and aims to stimulate employment in rural areas
- crocodile-infested — full of crocodiles
- crude oil fraction — A crude oil fraction is a component of crude oil, which has its own particular molecular composition, weight, and boiling point.
- cursor dipped in x — (jargon) The metaphorical source of the electronic equivalent of a poisoned-pen letter. Derived from English metaphors of the form "pen dipped in X" (where X = e.g. "acid", "bile", "vitriol"). These map over neatly to this hackish usage (the cursor being what moves, leaving letters behind, when one is composing on-line). "Talk about a nastygram! He must've had his cursor dipped in acid when he wrote that one!"