18-letter words containing l, u, n, c, h, r
- aeronautical chart — a topographic map of an area of the earth's surface, designed as an aid to aircraft navigation
- african lion hound — one of a South African breed of medium-sized muscular hunting dogs having a short, glossy, red or tan coat, with a characteristic ridge of hair along the spine consisting of parallel crowns of hair growing in the opposite direction of the rest of the coat, originally developed for hunting lions but now used primarily as a guard dog.
- asynchronous logic — (architecture) A data-driven circuit design technique where, instead of the components sharing a common clock and exchanging data on clock edges, data is passed on as soon as it is available. This removes the need to distribute a common clock signal throughout the circuit with acceptable clock skew. It also helps to reduce power dissipation in CMOS circuits because gates only switch when they are doing useful work rather than on every clock edge. There are many kinds of asynchronous logic. Data signals may use either "dual rail encoding" or "data bundling". Each dual rail encoded Boolean is implemented as two wires. This allows the value and the timing information to be communicated for each data bit. Bundled data has one wire for each data bit and another for timing. Level sensitive circuits typically represent a logic one by a high voltage and a logic zero by a low voltage whereas transition signalling uses a change in the signal level to convey information. A speed independent design is tolerant to variations in gate speeds but not to propagation delays in wires; a delay insensitive circuit is tolerant to variations in wire delays as well. The purest form of circuit is delay-insensitive and uses dual-rail encoding with transition signalling. A transition on one wire indicates the arrival of a zero, a transition on the other the arrival of a one. The levels on the wires are of no significance. Such an approach enables the design of fully delay-insensitive circuits and automatic layout as the delays introduced by the layout compiler can't affect the functionality (only the performance). Level sensitive designs can use simpler, stateless logic gates but require a "return to zero" phase in each transition.
- australopithecines — Plural form of australopithecine.
- bachelor's-buttons — any of various plants of the daisy family with button-like flower heads
- bullnose stretcher — bull stretcher (def 1).
- bullnose-stretcher — Also called bullnose stretcher. a brick having one of the edges along its length rounded for laying as a stretcher in a sill or the like.
- california fuchsia — a North American onagraceous plant, Zauschneria californica, with tubular scarlet flowers
- california-fuchsia — a plant belonging to the genus Fuchsia, of the evening primrose family, including many varieties cultivated for their handsome drooping flowers.
- cartilaginous fish — any fish of the class Chondrichthyes, including the sharks, skates, and rays, having a skeleton composed entirely of cartilage
- caterpillar hunter — any of various carabid beetles of the genus Calosoma, of Europe and North America, which prey on the larvae of moths and butterflies
- cellular telephone — a mobile phone
- centrifugal clutch — an automatic clutch in which the friction surfaces are engaged by weighted levers acting under centrifugal force at a certain speed of rotation
- chambered nautilus — nautilus (def 1).
- character-building — improving certain good or useful traits in a person's character, esp self-reliance, endurance, and courage
- children's crusade — a crusade to recover Jerusalem from the Saracens, undertaken in 1212 by thousands of French and German children who perished, were sold into slavery, or were turned back.
- chinese revolution — the overthrow of the last Manchu emperor and the establishment of a republic in China (1911–12)
- chlorofluorocarbon — Chlorofluorocarbons are the same as CFCs.
- chlorohydroquinone — a white to light-tan, crystalline, water-soluble solid, C 6 H 3 Cl(OH) 2 , used chiefly in organic synthesis and as a developer in photography.
- church of scotland — the established church in Scotland, Calvinist in doctrine and Presbyterian in constitution
- circular breathing — a technique for sustaining a phrase on a wind instrument, using the cheeks to force air out of the mouth while breathing in through the nose
- computer telephony — Computer Telephone Integration
- considered harmful — (programming, humour) A type of phrase based on the title of Edsger W. Dijkstra's famous note in the March 1968 Communications of the ACM, "Goto Statement Considered Harmful", which fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will (by policy) no longer print articles taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies bore titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke.
- exclusive brethren — one of the two main divisions of the Plymouth Brethren, which, in contrast to the Open Brethren, restricts its members' contacts with those outside the sect
- grandfather clause — U.S. History. a clause in the constitutions of some Southern states after 1890 intended to permit whites to vote while disfranchising blacks: it exempted from new literacy and property qualifications for voting those men entitled to vote before 1867 and their lineal descendants.
- handlebar mustache — A handlebar mustache is a long thick mustache with curled ends.
- haulage contractor — a person or firm that transports goods by lorry
- heart-lung machine — a device through which blood is shunted temporarily for oxygenation during surgery, while the heart or a lung is being repaired.
- heimlich manoeuvre — a technique in first aid to dislodge a foreign body in a person's windpipe by applying sudden upward pressure on the upper abdomen
- helicopter gunship — military attack helicopter
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hydroxychloroquine — a colorless crystalline solid, C 18 H 26 ClN 3 O, used in the treatment of malaria, lupus erythematosus, and rheumatoid arthritis.
- hyper-intellectual — appealing to or engaging the intellect: intellectual pursuits.
- immunopharmacology — the branch of pharmacology concerned with the immune system
- industrial vehicle — a vehicle designed for use in industry
- junior high school — a school attended after elementary school and usually consisting of grades seven through nine.
- launching ceremony — a ceremony that celebrates the launch of a ship for the first time into the water
- leave in the lurch — a situation at the close of various games in which the loser scores nothing or is far behind the opponent.
- lonely hearts club — a club for people who are trying to find a lover or a friend
- long-hours culture — The long-hours culture is the way in which some workers feel that they are expected to work much longer hours than they are paid to do.
- loschmidt's number — the number of molecules in one cubic centimeter of an ideal gas at standard temperature and pressure, equal to 2.687 × 10 19.
- louisiana purchase — a treaty signed with France in 1803 by which the U.S. purchased for $15,000,000 the land extending from the Mississippi River to the Rocky Mountains and from Canada to the Gulf of Mexico.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- naval architecture — the science of designing ships and other waterborne craft.
- neurophysiological — the branch of physiology dealing with the functions of the nervous system.
- neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
- neutrosophic logic — (logic) (Or "Smarandache logic") A generalisation of fuzzy logic based on Neutrosophy. A proposition is t true, i indeterminate, and f false, where t, i, and f are real values from the ranges T, I, F, with no restriction on T, I, F, or the sum n=t+i+f. Neutrosophic logic thus generalises: - intuitionistic logic, which supports incomplete theories (for 0
- plumber's merchant — a shop or business that sells things needed for the job of installing and repairing pipes, fixtures, etc, for water, drainage, and gas
- process scheduling — multitasking
- pulp canal therapy — endodontics.
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