18-letter words containing a, b, i, t, o

bill of quantities — a document drawn up by a quantity surveyor providing details of the prices, dimensions, etc, of the materials required to build a large structure, such as a factory
biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
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
biological control — the control of destructive organisms by the use of other organisms, such as the natural predators of the pests
biological parents — the biological mother and father of a child
biological therapy — biotherapy
bipolar transistor — (electronics) A transistor made from a sandwich of n- and p-type semiconductor material: either npn or pnp. The middle section is known as the "base" and the other two as the "collector" and "emitter". When used as an amplifying element, the base to emitter junction is in a "forward-biased" (conducting) condition, and the base to collector junction is "reverse-biased" or non-conducting. Small changes in the base to emitter current (the input signal) cause either holes (for pnp devices) or free electrons (for npn) to enter the base from the emitter. The attracting voltage of the collector causes the majority of these charges to cross into and be collected by the collector, resulting in amplification. Contrast field effect transistor.
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.
biz-core stability — (security) Internet security products which secure the business core.
blanche of castile — ?1188–1252, queen consort (1223–26) of Louis VIII of France, born in Spain. The mother of Louis IX, she acted as regent during his minority (1226–36) and his absence on a crusade (1248–52)
blocking capacitor — a capacitor that blocks the passage of direct current but allows alternating current to pass
bloggs family, the — An imaginary family consisting of Fred and Mary Bloggs and their children. Used as a standard example in knowledge representation to show the difference between extensional and intensional objects. For example, every occurrence of "Fred Bloggs" is the same unique person, whereas occurrences of "person" may refer to different people. Members of the Bloggs family have been known to pop up in bizarre places such as the DEC Telephone Directory. Compare Mbogo, Dr. Fred.
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.
bomb disposal unit — a unit of the police or armed services specializing in bomb disposal
boole's inequality — the theorem that the probability of several events occurring is less than or equal to the sum of the probabilities of each event occurring.
borosilicate glass — any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide
boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
branch to fishkill — (IBM: from the location of one of the corporation's facilities) Any unexpected jump in a program that produces catastrophic or just plain weird results. See jump off into never-never land, hyperspace.
branching fraction — (in branching) the proportion of the disintegrating nuclei that follow a particular branch to the total number of disintegrating nuclides
breach of security — an act that violates a country, area, or building's security measures
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
broken twill weave — a twill weave in which the direction of the diagonal produced by the weft threads is reversed after no more than two passages of the weft.
burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
business education — education for general knowledge of business practices.
butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.
cabernet sauvignon — a black grape originally grown in the Bordeaux area of France, and now throughout the wine-producing world
cabinet government — parliamentary government.
cambrian mountains — a mountain range in Wales, extending from Carmarthenshire in the S to Denbighshire in the N. Highest peak: Aran Fawddwy, 891 m (2970 ft)
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)
carisbrooke castle — a castle near Newport on the Isle of Wight: Charles I was held prisoner here from 1647 until his execution in 1649
chebyshev equation — Tchebycheff equation.
christian brothers — a religious congregation of laymen founded in France in 1684 for the education of the poor
claustrophobically — In a claustrophobic way.
cobalt violet deep — a medium to strong purple color.
coffee-table music — unadventurous music
combination square — an adjustable device for carpenters, used as a try square, miter square, level, etc.
combined operation — a military operation carried out jointly by allied forces
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
combustion furnace — a furnace used in the laboratory to carry out elemental analysis of organic compounds
contact inhibition — the cessation of movement, growth, and division in cells that touch each other.
controllable-pitch — (of a marine or aircraft propeller) having blades whose pitch can be changed during navigation or flight; variable-pitch.
corpus christi bay — a bay in S Texas, at the mouth of the Nueces River.
cumbrian mountains — a mountain range in NW England, in Cumbria. Highest peak: Scafell Pike, 977 m (3206 ft)
de bruijn notation — (language) A variation of lambda notation for specifying functions using numbers instead of names to refer to formal parameters. A reference to a formal parameter is a number which gives the number of lambdas (written as \ here) between the reference and the lambda which binds the parameter. E.g. the function \ f . \ x . f x would be written \ . \ . 1 0. The 0 refers to the innermost lambda, the 1 to the next etc. The chief advantage of this notation is that it avoids the possibility of name capture and removes the need for alpha conversion.
de-objectification — to present as an object, especially of sight, touch, or other physical sense; make objective; externalize.
debt consolidation — the process of taking out a new loan (often secured on one's property) in order to pay off a number of existing debts

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