18-letter words containing a, c, n, t, h
- coast rhododendron — a rhododendron, Rhododendron macrophyllum, of western North America, having large clusters of rose-purple flowers spotted with brown: the state flower of Washington.
- collection charges — the charges levied to cover expenses for the collection of debt
- 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
- come the raw prawn — to attempt deception
- commodity exchange — an exchange where commodities are traded
- commonwealth games — an event held every four years in which sportspeople from the countries of the Commonwealth compete
- community hospital — (in the US) a local hospital
- 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.
- connected subgraph — (mathematics) A connected graph consisting of a subset of the nodes and edges of some other graph.
- contact inhibition — the cessation of movement, growth, and division in cells that touch each other.
- continental shield — any of the large, low-lying areas in the Earth's crust that are composed of Precambrian crystalline rocks
- continuation sheet — (in a document) a page that continues from the one before it, containing similar information
- controllable-pitch — (of a marine or aircraft propeller) having blades whose pitch can be changed during navigation or flight; variable-pitch.
- conversation chair — an English chair of the 18th century designed to be straddled facing the back of the chair with the elbows resting on the crest rail: an English imitation of the voyeuse.
- copper naphthenate — a green salt, soluble in benzene, used as an insecticide and a wood preservative, but harmless to plants.
- cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
- coronation chicken — a dish of cold cooked chicken in a mild creamy curry sauce
- cot death syndrome — the unexplained sudden death of an infant during sleep
- countertherapeutic — Working against a therapy.
- cranial osteopathy — osteopathy that focuses on the cranium and the spine
- creatine phosphate — phosphocreatine.
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- cutthroat contract — a form of contract bridge for four persons in which partners are decided by the bidding.
- cytoarchitectonics — Cytoarchitecture.
- dechristianization — The act of dechristianizing; the systematic removal of Christianity or Christian elements.
- destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
- dielectric heating — the heating of a nonconducting substance caused by dielectric loss when the material is placed in a variable electric field.
- digital technology — the branch of scientific or engineering knowledge that deals with the creation and practical use of digital or computerized devices, methods, systems, etc.: advances in digital technology.
- diphtheria vaccine — a vaccine used to produce immunity against diphtheria
- discharge printing — a fabric-printing method in which the material is dyed and then certain areas are discharged so as to permit the original hue or its color replacement to act as a pattern against the colored ground.
- disenfranchisement — to disfranchise.
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- double achievement — a representation of the arms of a husband beside those of his wife such that a difference of rank between them is shown.
- drinking chocolate — sweetened cocoa powder
- elementary teacher — a teacher in an elementary school
- emmenthal (cheese) — a hard, pale-yellow Swiss cheese with a mild flavor and large holes
- ethical investment — an investment in a company whose activities or products are not considered by the investor to be unethical
- ethnomusicological — Relating to or pertaining to ethnomusicology.
- ethnopsychological — Relating to ethnopsychology.
- executive chairman — the most senior internal position within a company, combining the duties of chairman and chief executive
- farm the long acre — to graze cows on the verge of a road
- fifth monarchy men — (during the Commonwealth in the 17th century) a militant sect of Puritans who identified the fifth monarchy with the millennial reign of Christ and who believed they should help to inaugurate that reign by force.
- fly in the face of — to move through the air using wings.
- fourth commandment — “Remember the sabbath day, to keep it holy”: fourth of the Ten Commandments.
- fracture toughness — The fracture toughness of a material is how likely it is to resist fracture.
- french west africa — a former French federation in W Africa, including Dahomey (now Benin), French Guinea, French Sudan (now Mali), Ivory Coast, Mauritania, Niger, Senegal, and Upper Volta (now Burkina Fasso).
- fu manchu mustache — a mustache whose ends droop to the chin.
- genetic algorithms — genetic algorithm
- giant peacock moth — the largest European moth, an emperor, Saturnia pyri, reaching 15 cm (6 in.) in wingspan. It is mottled brown with a prominent ocellus on each wing and being night-flying can be mistaken for a bat
- goods and chattels — personal property