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18-letter words containing a, d, i, r, o

  • audio conferencing — the practice of conducting meetings by the use of audio telecommunications
  • auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
  • australian doubles — an unusual formation in doubles in which the server's partner is positioned on the same side of the court as the server.
  • authorized capital — the total amount of value of the shares that a company is allowed to distribute
  • authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
  • avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
  • background reading — reading of related works in order to get contextual information on a topic that you are intending to study or write about
  • ballistocardiogram — a tracing made by a ballistocardiograph
  • bartholin's glands — two small reddish-yellow glands, one on each side of the vaginal orifice, that secrete a mucous lubricating substance during sexual stimulation in females
  • biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
  • birds of a feather — If you refer to two people as birds of a feather, you mean that they have the same interests or are very similar.
  • bloodbrain barrier — a layer of tightly packed cells that make up the walls of brain capillaries and prevent substances in the blood from diffusing freely into the brain: passage across the cell membranes is determined by solubility in the lipid bilayer or recognition by a transport molecule.
  • board of directors — A company's board of directors is the group of people elected by its shareholders to manage the company.
  • board of education — a group or agency with responsibility for education
  • board of elections — a bipartisan board appointed usually by local authorities and charged with control of elections and voting procedure.
  • board of examiners — a group of people who officially administer examinations
  • boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
  • brazilian rosewood — a Brazilian tree, Dalbergia nigra, of the legume family.
  • british somaliland — a former British protectorate (1884–1960) in E Africa, on the Gulf of Aden: united with Italian Somaliland in 1960 to form Somalia (or the Somali Republic); in 1991 the self-styled republic of Somaliland, covering the same area as the former British Somaliland, declared itself independent and continues to function largely as a separate entity, though without international recognition
  • broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
  • bronchocandidiasis — See under candidiasis.
  • butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.
  • camp david accords — a peace treaty between Israel and Egypt issuing from talks at Camp David between Egyptian President Sadat, Israeli Prime Minister Begin, and the host, U.S. President Carter: signed in 1979.
  • cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
  • carbonic anhydrase — an enzyme in blood cells that catalyses the decomposition of carbonic acid into carbon dioxide and water, facilitating the transport of carbon dioxide from the tissues to the lungs
  • carbonic-anhydride — carbon dioxide.
  • carcinoid syndrome — the systemic effects, including flushing, palpitations, diarrhea, and cramps, resulting from increased blood levels of serotonin secreted by a carcinoid.
  • carolina chickadee — a chickadee, Parus carolinensis, of the southeastern U.S., resembling but smaller than the black-capped chickadee.
  • cationic detergent — a type of detergent in which the active part of the molecule is a positive ion (cation). Cationic detergents are usually quaternary ammonium salts and often also have bactericidal properties
  • ceiling decoration — a plaster moulding for the centre of a ceiling; other decoration, such as coving
  • centralized school — a public school formed from the pupils and teachers of a number of discontinued smaller schools, especially in a rural district.
  • cerebral dominance — the normal tendency for one half of the brain, usually the left cerebral hemisphere in right-handed people, to exercise more control over certain functions (e.g. handedness and language) than the other
  • cerenkov radiation — radiation emitted when a charged particle travels through a medium at a speed greater than the speed of light through that medium
  • character disorder — a disorder characterized by socially undesirable behavior, as poor control of impulses or inability to maintain close emotional relationships, and by absence of anxiety or guilt.
  • character encoding — (character)   (Or "character encoding scheme") A mapping between binary data values and character code positions (or "code points"). Early systems stored characters in a variety of ways, e.g. four six-bit characters in a 24-bit word, but around 1960, eight-bit bytes started to become the most common data storage layout, with each character stored in one byte, typically in the ASCII character set. In the case of ASCII, the character encoding is an identity mapping: code position 65 maps to the byte value 65. This is possible because ASCII uses only code positions representable as single bytes, i.e., values between 0 and 255. (US-ASCII only uses values 0 to 127, in fact.) From the late 1990s, there was increased use of larger character sets such as Unicode and many CJK coded character sets. These can represent characters from many languages and more symbols.
  • children of israel — the Jews; Hebrews
  • 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.
  • circular dichroism — selective absorption of one of the two possible circular polarizations of light.
  • 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 scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
  • coastguard station — the headquarters or local offices of a coastguard
  • 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
  • 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.
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