18-letter words containing m, o, s, t
- composition rubber — manufactured rubber
- composition series — a normal series of subgroups in which no additional subgroups can be inserted.
- compression stroke — The compression stroke is the stroke in an engine in which the air or air/fuel mixture is compressed before ignition.
- 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 scientist — a person with advanced knowledge of computers and how they work
- conceptual realism — the doctrine that universals have real and independent existence.
- consolato del mare — a code of maritime law compiled in the Middle Ages: it drew upon ancient law and has influenced modern law.
- consumer terrorism — the practice of introducing dangerous substances to foodstuffs or other consumer products, esp to extort money from the manufacturers
- contact dermatitis — dermatitis caused by direct contact with an irritating substance, as an allergen or chemical
- continental system — French system.
- costume department — the department in a theatre or television company that is responsible for actors' costumes
- cot death syndrome — the unexplained sudden death of an infant during sleep
- counterculturalism — The counterculture movement or lifestyle.
- court of st. james — the British royal court
- crookes radiometer — a type of radiometer consisting of an evacuated glass bulb containing a set of lightweight vanes, each blackened on one side. The vanes are mounted on a vertical axis and revolve when light, or other radiant energy, falls on them
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- cumbrian mountains — a mountain range in NW England, in Cumbria. Highest peak: Scafell Pike, 977 m (3206 ft)
- cumulative scoring — a method of scoring in which the score of a partnership is taken as the sum of their scores on all hands played.
- customer relations — Customer relations are the relationships that a business has with its customers and the way in which it treats them.
- customs and excise — Customs and Excise is a British government department which is responsible for collecting taxes on imported and exported goods. Compare Customs Service.
- customs inspection — an inspection carried out by a customs department
- daytime television — television broadcasts that are shown during the daytime rather than in the evening
- deanthropomorphism — the ridding of philosophy or religion of anthropomorphic beliefs and doctrines.
- demorgan's theorem — (logic) A logical theorem which states that the complement of a conjunction is the disjunction of the complements or vice versa. In symbols: not (x and y) = (not x) or (not y) not (x or y) = (not x) and (not y) E.g. if it is not the case that I am tall and thin then I am either short or fat (or both). The theorem can be extended to combinations of more than two terms in the obvious way. The same laws also apply to sets, replacing logical complement with set complement, conjunction ("and") with set intersection, and disjunction ("or") with set union. A (C) programmer might use this to re-write if (!foo && !bar) ... as if (!(foo || bar)) ... thus saving one operator application (though an optimising compiler should do the same, leaving the programmer free to use whichever form seemed clearest).
- departmental store — a department store.
- development system — a computer system, including hardware and software, that is specifically designed to aid in the development of software and interfaces
- dia de los muertos — Day of the Dead.
- diastereoisomerism — (chemistry) Any form of stereoisomerism other than enantiomerism.
- diatomaceous earth — an unconsolidated form of diatomite
- didot point system — a Continental system of measurement for type, based on a unit of 0.0148 inches (0.3759 mm).
- dimensionalisation — Alternative spelling of dimensionalization.
- dimensionalization — The process of dimensionalizing.
- dimethyl sulfoxide — DMSO.
- dimethylsulphoxide — a colourless odourless liquid substance used as a solvent and in medicine as an agent to improve the penetration of drugs applied to the skin. Formula: (CH3)2SO
- diplomatic service — diplomatic corps
- diplomatic shuttle — a series of diplomatic visits to other states made by an official, such as an ambassador or envoy
- disodium phosphate — sodium phosphate (def 2).
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- distributed memory — (architecture) The kind of memory in a parallel processor where each processor has fast access to its own local memory and where to access another processor's memory it must send a message via the inter-processor network. Opposite: shared memory.
- division algorithm — the theorem that an integer can be written as the sum of the product of two integers, one a given positive integer, added to a positive integer smaller than the given positive integer. Compare Euclidean algorithm.
- domain name system — (networking) (DNS) A general-purpose distributed, replicated, data query service chiefly used on Internet for translating hostnames into Internet addresses. Also, the style of hostname used on the Internet, though such a name is properly called a fully qualified domain name. DNS can be configured to use a sequence of name servers, based on the domains in the name being looked for, until a match is found. The name resolution client (e.g. Unix's gethostbyname() library function) can be configured to search for host information in the following order: first in the local hosts file, second in NIS and third in DNS. This sequencing of Naming Services is sometimes called "name service switching". Under Solaris is configured in the file /etc/nsswitch.conf. DNS can be queried interactively using the command nslookup. It is defined in STD 13, RFC 1034, RFC 1035, RFC 1591.
- domestic appliance — a machine used for household tasks, for example, a washing machine, refrigerator, etc.
- donor insemination — a process which involves using sperm which has been voluntarily given for use in the insemination of another person
- duodenojejunostomy — the formation of an artificial connection between the duodenum and the jejunum.
- dysthymic disorder — a psychiatric disorder characterized by generalized depression that lasts for at least a year
- east india company — the company chartered by the English government in 1600 to carry on trade in the East Indies: dissolved in 1874.
- eastern meadowlark — any of several American songbirds of the genus Sturnella, of the family Icteridae, especially S. magna (eastern meadowlark) and S. neglecta (western meadowlark) having a brownish and black back and wings and a yellow breast, noted for their clear, tuneful song.
- economic sanctions — any actions taken by one nation or group of nations to harm the economy of another nation or group, often to force a political change
- ecosystem services — the important benefits for human beings that arise from healthily functioning ecosystems, notably production of oxygen, soil genesis, and water detoxification
- eigendecomposition — (linear algebra) The factorization of a matrix into a canonical form, whereby the matrix is represented in terms of its eigenvalues and eigenvectors.