18-letter words containing a, b, u, r
- a barrel of laughs — If an experience is a barrel of laughs, it is very enjoyable. If someone is a barrel of laughs, they are fun to be with.
- absolute threshold — the minimum intensity of a stimulus at which it can just be perceived
- account receivable — a current asset account showing amounts payable to a firm by customers who have made purchases of goods and services on credit
- acquired behaviour — the behaviour of an organism resulting from the effects of the environment
- actual bodily harm — Actual bodily harm is a criminal offence in which someone gives another person a minor injury.
- adjournment debate — (in the UK) a short debate, held immediately before the end of each day's business in the House of Commons, in which backbench MPs raise matters relating to their constituencies
- adjustable spanner — a tool with adjustable jaws used for turning bolts, etc
- albert bruce sabin — Albert Bruce, 1906–93, U.S. physician, born in Poland: developed Sabin vaccine.
- algebraic equation — an equation in the form of a polynomial having a finite number of terms and equated to zero, as 2 x 3 + 4 x 2 − x + 7 = 0.
- algebraic function — any function which can be constructed in a finite number of steps from the elementary operations and the inverses of any function already constructed
- almoner's cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- ammonium carbamate — a white soluble crystalline compound produced by reaction between dry ammonia and carbon dioxide and used as a nitrogen fertilizer. Formula: (NH4)CO2NH2
- ammonium carbonate — an unstable pungent soluble white powder that is a double salt of ammonium bicarbonate and ammonium carbamate: used in the manufacture of baking powder, smelling salts, and ammonium compounds. Formula: (NH4)HCO3.(NH4)CO2NH2
- antiscorbutic acid — vitamin C
- apartment building — An apartment building or apartment house is a tall building which contains different apartments on different floors.
- apprentice plumber — a trainee plumber
- arachibutyrophobia — Fear of peanut butter sticking to the roof of one's mouth.
- arbitration clause — a clause in a contract laying down that disputes between the parties should be settled by arbitration
- attribution theory — the theory that tries to explain how people link actions and emotions to particular causes, both internal and external
- 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.
- autobiographically — In a autobiographical manner.
- bachelor's-buttons — any of various plants of the daisy family with button-like flower heads
- back to square one — If you are back to square one, you have to start dealing with something from the beginning again because the way you were dealing with it has failed.
- background reading — reading of related works in order to get contextual information on a topic that you are intending to study or write about
- backus normal form — Backus-Naur Form
- barbershop quartet — a group of four singers who perform a style of music sung in four-part harmony
- bargaining counter — A bargaining counter is the same as a bargaining chip.
- barium thiosulfate — a white, crystalline, water-insoluble, poisonous solid, BaS 2 O 3 ⋅H 2 O, used chiefly in the manufacture of explosives, matches, paints, and varnishes.
- battle of omdurman — a battle (1898) in which the Mahdi's successor and his Ansar followers were defeated by Lord Kitchener's British forces
- battleground-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.
- beefsteak mushroom — an edible bracket fungus, Fistulina hepatica, that grows on trees and can rot the heartwood of living oaks and chestnuts.
- behaviour patterns — the characteristic ways in which a person or animal acts
- bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
- best-ball foursome — a match, scored by holes, between two pairs of players, in which the score of the lower scoring member of each pair is taken as their score for the hole.
- bioinstrumentation — the use of instruments, as sensors, to detect and measure certain body functions, as of persons in spaceflight, and transmit the data to a point where it is evaluated
- blackback flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
- blissful ignorance — unawareness or inexperience of something unpleasant
- blue-collar worker — a manual industrial worker
- board of education — a group or agency with responsibility for education
- boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
- bounty-fed farmers — farmers who benefit from subsidies
- bourdon-tube gauge — an instrument for measuring the pressure of gases or liquids, consisting of a semicircular or coiled, flexible metal tube attached to a gauge that records the degree to which the tube is straightened by the pressure of the gas or liquid inside.
- branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
- brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
- breach of security — an act that violates a country, area, or building's security measures
- bread and circuses — something offered as a means of distracting attention from a problem or grievance
- break your silence — If someone breaks their silence about something, they talk about something that they have not talked about before or for a long time.
- bring-and-buy sale — A bring-and-buy sale is an informal sale to raise money for a charity or other organization. People who come to the sale bring things to be sold and buy things that other people have brought.
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- brute force attack — (cryptography) A method of breaking a cipher (that is, to decrypt a specific encrypted text) by trying every possible key. The quicker the brute force attack, the weaker the cipher. Feasibility of brute force attack depends on the key length of the cipher, and on the amount of computational power available to the attacker. Brute force attack is impossible against the ciphers with variable-size key, such as a one-time pad cipher.
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