21-letter words containing o, l, d, r, u, s
- air-to-ground missile — a missile fired from an aircraft that has a target on the ground
- appendicular skeleton — the girdles and skeleton of the limbs
- astronomical latitude — the angle between the direction of gravity at the observer's position and the plane of the celestial equator
- australian cattle dog — a compact strongly-built dog of a breed with pricked ears and a smooth bluish-grey coat, often used for controlling and moving cattle
- bernadette of lourdes — Saint. original name Marie Bernarde Soubirous. 1844–79, French peasant girl born in Lourdes, whose visions of the Virgin Mary led to the establishment of Lourdes as a centre of pilgrimage, esp for the sick or crippled. Feast day: Feb 18
- binomial distribution — a statistical distribution giving the probability of obtaining a specified number of successes in a specified number of independent trials of an experiment with a constant probability of success in each. Symbol: Bi (n, p), where n is the number of trials and p the probability of success in each
- bulletin board system — (communications, application) (BBS, bboard /bee'bord/, message board, forum; plural: BBSes) A computer and associated software which typically provides an electronic message database where people can log in and leave messages. Messages are typically split into topic groups similar to the newsgroups on Usenet (which is like a distributed BBS). Any user may submit or read any message in these public areas. The term comes from physical pieces of board on which people can pin messages written on paper for general consumption - a "physical bulletin board". Ward Christensen, the programmer and operator of the first BBS (on-line 1978-02-16) called it a CBBS for "computer bulletin board system". Since the rise of the World-Wide Web, the term has become antiquated, though the concept is more popular than ever, with many websites featuring discussion areas where users can post messages for public consumption. Apart from public message areas, some BBSes provided archives of files, personal electronic mail and other services of interest to the system operator (sysop). Thousands of BBSes around the world were run from amateurs' homes on MS-DOS boxes with a single modem line each. Although BBSes were traditionally the domain of hobbyists, many connected directly to the Internet (accessed via telnet), others were operated by government, educational, and research institutions. Fans of Usenet or the big commercial time-sharing bboards such as CompuServe, CIX and GEnie tended to consider local BBSes the low-rent district of the hacker culture, but they helped connect hackers and users in the personal-micro and let them exchange code. Use of this term for a Usenet newsgroup generally marks one either as a newbie fresh in from the BBS world or as a real old-timer predating Usenet.
- clostridium difficile — Clostridium difficile is a bacterium that causes severe diarrhoea. It is commonly found in hospitals. C.diff is also used.
- column address strobe — (hardware) (CAS) A signal sent from a processor (or memory controller) to a dynamic random-access memory (DRAM) (qv) circuit to indicate that the column address lines are valid.
- comfortably-furnished — containing comfortable furniture
- confused flour beetle — a brown flour beetle, Tribolium confusum, that feeds on stored grain and grain products.
- corpuscular radiation — radiation consisting of atomic and subatomic particles, as alpha particles, beta particles, and neutrons.
- correspondence column — a section of a newspaper or magazine in which are printed readers' letters to the editor
- croscarmellose sodium — Croscarmellose sodium is a substance used in tablets and capsules as a disintegrant.
- delusions of grandeur — If someone has delusions of grandeur, they think and behave as if they are much more important or powerful than they really are.
- disruptive technology — A disruptive technology is a new technology, such as computers and the Internet, which has a rapid and major effect on technologies that existed before.
- double predestination — the doctrine that God has foreordained both those who will be saved and those who will be damned.
- double spanish burton — a tackle having one standing block and two running blocks, giving a mechanical advantage of five, neglecting friction.
- dumfries and galloway — a region in S Scotland. 2460 sq. mi. (6371 sq. km).
- eccles-jordan circuit — flip-flop
- endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
- environmental studies — a university course studying the environment and related issues
- epidermolysis bullosa — type of genetic skin disorder
- ferric sodium oxalate — an emerald-green, crystalline, extremely water-soluble salt, used in photography and blueprinting.
- fluorophosphoric acid — any of three acids containing fluorine and phosphorus, HPF 6 , HPO 2 F 2 , or H 2 PO 3 F.
- fraudulent conversion — conversion committed with the intent to defraud
- gird (up) one's loins — to get ready to do something difficult or strenuous
- gold bullion standard — a gold standard in which gold is not coined but may be purchased at a fixed price for foreign exchange.
- goldbach's conjecture — the conjecture that every even number greater than two is the sum of two prime numbers
- illinois bundleflower — a warm-season perennial, Desmanthus illinoensis, having small brown legumes and fernlike leaves, native to North American prairies, glades, and pastures.
- indigenous australian — another name for Aboriginal and Torres Strait Islander
- indo-australian plate — a major tectonic division of the earth's crust, comprising India and the Australian continent and adjacent suboceanic basins (the Tasman, South Australian, Mid-Indian, Cocos, and Australian basins); separated from the Eurasian Plate by the Java Trench, from the Pacific Plate by the Tonga-Kermadec Trench, and from the African Plate by a series of mid-ocean ridges (the Carlsberg, Mid-Indian, and Southeast Indian ridges).
- industrial misconduct — behaviour by an employee that is considered to be negligent or irregular to such an extent that disciplinary action may be taken, usually by agreement between management and the employee's representatives
- industrial psychology — the application of psychological principles and techniques to business and industrial problems, as in the selection of personnel or development of training programs.
- industrial revolution — (sometimes initial capital letters) the totality of the changes in economic and social organization that began about 1760 in England and later in other countries, characterized chiefly by the replacement of hand tools with power-driven machines, as the power loom and the steam engine, and by the concentration of industry in large establishments.
- kekule von stradonitz — Friedrich August [free-drikh ou-goo st] /ˈfri drɪx ˈaʊ gʊst/ (Show IPA), 1829–96, German chemist.
- lafcadio's adventures — French Les Caves du Vatican. a novel (1914) by André Gide.
- language-based editor — language-sensitive editor
- lap and shoulder belt — a car seat belt
- lost in the underflow — (jargon) Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to "floating point underflow". The Hacker's Jargon File claimed that it is also a pun on "undertow" (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the path of a thrown baseball, but that effect gets lost in the underflow". Compare epsilon, epsilon squared; see also overflow bit.
- medium access control — Media Access Control
- mucopolysaccharidoses — Plural form of mucopolysaccharidosis.
- mucopolysaccharidosis — Any of a group of metabolic disorders caused by the absence or malfunction of lysosomal enzymes needed to break down glycosaminoglycans.
- nitrosylsulfuric acid — a clear, straw-colored, oily, corrosive liquid, HNO 5 S, used chiefly in the manufacture of dyes.
- northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
- optical double (star) — double star (sense 2)
- packed encoding rules — (protocol, standard) (PER) ASN.1 encoding rules for producing a compact transfer syntax for data structures described in ASN.1, defined in 1994. PER provides a much more compact encoding then BER. It tries to represents the data units using the minimum number of bits. The compactness requires that the decoder knows the complete abstract syntax of the data structure to be decoded, however. Documents: ITU-T X.691, ISO 8825-2.
- peroxydisulfuric acid — persulfuric acid (def 2).
- ploughman's spikenard — a European plant, Inula conyza, with tubular yellowish flower heads surrounded by purple bracts: family Asteraceae (composites)
- populist shop steward — a shop steward who operates in a delegate role, putting the immediate interests of his members before union principles and policies
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