19-letter words containing o, b, d, u, r, a
- ammonium bifluoride — a white, crystalline, water-soluble, poisonous solid, NH 4 HF 2 , used chiefly for cleaning and sterilizing brewing and dairy equipment.
- anno urbis conditae — in a (specified) year from the founding of the city: the ancient Romans reckoned dates from Rome's founding, c. 753 b.c.
- backward somersault — a somersault performed in a backward direction with the legs leading the rest of the body
- balfour declaration — the statement made by Arthur Balfour in 1917 of British support for the setting up of a national home for the Jews in Palestine, provided that the rights of "existing non-Jewish communities" in Palestine could be safeguarded
- battle-ground state — a state of the U.S. in which the Democratic and Republican candidates both have a good chance of winning and that is considered key to the outcome of a presidential election: the swing states of Ohio and Indiana.
- baudotbetical order — (algorithm) /baw do bet' i k*l/ Sorted into an order where numerics and special characters are intermixed by sorting a 5-bit Baudot code file ignoring the numeric shift and unshift codes.
- below par/under par — If you feel below par or under par, you feel tired and unable to perform as well as you normally do.
- binocular disparity — the small differences in the positions of the parts of the images falling on each eye that results when each eye views the scene from a slightly different position; these differences make stereoscopic vision possible
- blue-tongued lizard — a large Australian lizard, Tiliqua scincoides, characterized by having a cobalt-blue tongue.
- board of trade unit — a unit of electrical energy equal to 1 kilowatt-hour
- boundary commission — (in Britain) a body established by statute to undertake periodic reviews of the boundaries of parliamentary constituencies and to recommend changes to take account of population shifts
- brush-tailed possum — any of several widely-distributed Australian possums of the genus Trichosurus
- building contractor — an individual or company that contracts for the construction of houses, etc
- bulbourethral gland — Cowper's gland
- butabarbital sodium — a barbiturate, C 10 H 15 N 2 NaO 3 , used as a sedative and hypnotic.
- cerebrospinal fluid — the clear colourless fluid in the spaces inside and around the spinal cord and brain
- chamber of deputies — the lower house of the legislature of certain countries, as Italy.
- cobaltous hydroxide — a rose-red, amorphous, water-insoluble powder, Co 2 O 3 ⋅3H 2 O, used chiefly in the preparation of cobalt salts and in the manufacture of paint and varnish driers.
- cock and bull story — an absurd, improbable story presented as the truth: Don't ask him about his ancestry unless you want to hear a cock-and-bull story.
- cock-and-bull story — If you describe something that someone tells you as a cock-and-bull story, you mean that you do not believe it is true.
- convergent boundary — a major geologic discontinuity or suture marking the juncture of lithospheric plates that have been joined by plate tectonics.
- coordination number — the number of coordinated species surrounding the central atom in a complex or crystal
- cudgel one's brains — to think hard about a problem
- darby and joan club — a club for elderly people
- de broglie equation — the postulate of wave mechanics that a particle of mass m moving at a velocity v will have the properties of a wave of wavelength h / mv (de Broglie wavelength) where h is Planck's constant.
- developable surface — a surface that can be flattened onto a plane without stretching or compressing any part of it, as a circular cone.
- double-helical gear — herringbone gear.
- dry-bulk cargo ship — a ship that carries an unpackaged dry cargo such as coal or grain; bulk carrier
- east dunbartonshire — a council area of central Scotland to the N of Glasgow: part of Strathclyde region from 1975 until 1996: mainly agricultural and residential. Administrative centre: Kirkintilloch. Pop: 106 970 (2003 est). Area: 172 sq km (66 sq miles)
- ebola virus disease — Also called Ebola fever, Ebola hemorrhagic fever, Ebola virus disease. a usually fatal disease, a type of hemorrhagic fever, caused by the Ebola virus and marked by high fever, severe gastrointestinal distress, and bleeding.
- goldbach conjecture — an unproved theorem that every even integer greater than 2 can be written as the sum of two prime numbers.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- hydroxybutyric acid — ketone body.
- hydroxydaunorubicin — Doxorubicin.
- ipratropium bromide — an anticholinergic bronchodilator, C 20 H 30 BrNO 3 , used in the treatment of chronic bronchitis and in airway obstruction diseases.
- keyboard instrument — any musical instrument that is played using a keyboard
- mary mcleod bethune — Mary McLeod [muh-kloud] /məˈklaʊd/ (Show IPA), 1875–1955, U.S. educator and civil-rights leader.
- mordvinian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
- neighbourhood watch — a scheme under which members of a community agree together to take responsibility for keeping an eye on each other's property, as a way of preventing crime
- normal distribution — a theoretical frequency distribution represented by a normal curve.
- olive-backed thrush — Swainson's thrush.
- optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- profitability study — a study of how much profit a company, organization, etc, makes or how profitable it is
- pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
- pseudorandom number — (programming) One of a sequence of numbers generated by some algorithm so as to have an even distribution over some range of values and minimal correlation between successive values. Pseudorandom numbers are used in simulation and encryption. They are pseudorandom not random because the sequence eventually repeats exactly and is entirely determined by the initial conditions. One of the simplest algorithms is x[i+1] = (a * x[i] + c) mod m but this repeats after at most m numbers and successive numbers are closely related. Better algorithms generally use more previous numbers to calculate the next number.
- republic of ireland — John, 1838–1918, U.S. Roman Catholic clergyman and social reformer, born in Ireland: archbishop of St. Paul, Minn., 1888–1918.
- standing broad jump — a jump for distance from a standing position.
- stationery cupboard — a cupboard where things like paper, pens and paper clips are kept
- to be headquartered — to be based; to have headquarters (in a place)
- to break new ground — If you break new ground, you do something completely different or you do something in a completely different way.
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