18-letter words containing o, p, e, r, a, b
- aarp probe packets — (networking) AARP packets sent out on a nonextended AppleTalk network to discover whether a randomly selected node ID is being used by any node. If not, the sending node uses the node ID. If so, it chooses a different ID and sends more AARP probe packets.
- adobe type manager — (text, tool, product) (ATM) Software that produces PostScript outline fonts on screen and paper. There are versions that run under Microsoft Windows and on the Macintosh. ATM can do hinting, multiple master and anti-aliasing.
- algebraic topology — the branch of mathematics that deals with the application of algebraic methods to topology, especially the study of homology and homotopy.
- almoner's cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- as far as possible — to the greatest possible extent
- assignment problem — (mathematics, algorithm) (Or "linear assignment") Any problem involving minimising the sum of C(a, b) over a set P of pairs (a, b) where a is an element of some set A and b is an element of set B, and C is some function, under constraints such as "each element of A must appear exactly once in P" or similarly for B, or both. For example, the a's could be workers and the b's projects. The problem is "linear" because the "cost function" C() depends only on the particular pairing (a, b) and is independent of all other pairings.
- bachelor apartment — a flat consisting of one room that is used as a sitting room and bedroom, as well as a kitchenette and a bathroom
- bachelorette party — A bachelorette party is a party for a woman who is getting married very soon, to which only women are invited.
- barbershop quartet — a group of four singers who perform a style of music sung in four-part harmony
- baritone saxophone — the second lowest instrument in the family of saxophones
- behaviour patterns — the characteristic ways in which a person or animal acts
- benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
- bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
- biological parents — the biological mother and father of a child
- biological therapy — biotherapy
- borax pentahydrate — a white, crystalline, water-soluble solid, Na 2 B 4 O 7 ⋅5H 2 O, used chiefly for killing weeds, as a water softener, and as a disinfectant and deodorizing agent.
- bore the pants off — to bore extremely
- 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.
- broad-leaved maple — a maple, Acer macrophyllum, of western North America, characterized by dark green, thickened leaves that may reach 12 inches (30 cm) or more in width.
- 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)
- combined operation — a military operation carried out jointly by allied forces
- complementary base — either of the nucleotide bases linked by a hydrogen bond on opposite strands of DNA or double-stranded RNA: guanine is the complementary base of cytosine, and adenine is the complementary base of thymine in DNA and of uracil in RNA.
- connected subgraph — (mathematics) A connected graph consisting of a subset of the nodes and edges of some other graph.
- controllable-pitch — (of a marine or aircraft propeller) having blades whose pitch can be changed during navigation or flight; variable-pitch.
- correspondent bank — A correspondent bank is a bank that provides services such as accepting deposits for another bank.
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
- dominican republic — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.
- double-page spread — two pages treated as one in a publication, with images or text extending across the binding
- elizabeth petrovna — 1709-62; empress of Russia (1741-62): daughter of Peter I
- farmer-labor party — a political party in Minnesota, founded in 1920 and merged with the Democratic Party in 1944.
- football supporter — a person who supports a particular football team
- forward compatible — forward compatibility
- great pastern bone — the part of the foot of a horse, cow, etc., between the fetlock and the hoof.
- hamilton's problem — Hamiltonian problem
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- impressionableness — The quality of being impressionable.
- in good/bad repair — If something such as a building is in good repair, it is in good condition. If it is in bad repair, it is in bad condition.
- irreproachableness — The quality or state of being irreproachable; integrity; innocence.
- lubber grasshopper — plains grasshopper.
- membrane transport — the process by which physiologically important substances, such as calcium ions, sugars, etc, are conveyed across a biological membrane
- mordovian 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)
- motor torpedo boat — PT boat.
- napoleon bonaparte — Jérôme [juh-rohm;; French zhey-rohm] /dʒəˈroʊm;; French ʒeɪˈroʊm/ (Show IPA), 1784–1860, king of Westphalia 1807 (brother of Napoleon I).
- nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
- nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
- nonachlorobiphenyl — (organic compound) Either of three isomers of the polychlorinated biphenyl containing nine chlorine atoms.
- octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
- one-banana problem — (jargon, abuse) At computer installations where the computers have operators for routine administrivia, the programmers and hardware people tend to look down on the operators and claim that a trained monkey could do their job. The incentives offered to said monkeys would then describe the difficulty of a task. A one-banana problem is simple; hence, "It's only a one-banana job at the most; what's taking them so long?" See also Infinite-Monkey Theorem.
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