18-letter words containing u, n, r, s, h
- ailanthus silkworm — a green silkworm, Samia walkeri, introduced into the U.S. from China, that feeds on the leaves of the ailanthus.
- anthropomorphously — In an anthropomorphous manner; in a manner resembling that of a human.
- aperture synthesis — an array of radio telescopes used in radio astronomy to simulate a single large-aperture telescope. Some such instruments use movable dishes while others use fixed dishes
- 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.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- australopithecines — Plural form of australopithecine.
- authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
- bachelor's-buttons — any of various plants of the daisy family with button-like flower heads
- behaviour patterns — the characteristic ways in which a person or animal acts
- branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- 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
- cash-for-questions — of, involved in, or relating to a scandal in which some MPs were accused of accepting bribes to ask particular questions in Parliament
- chambered nautilus — nautilus (def 1).
- 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)
- church of scotland — the established church in Scotland, Calvinist in doctrine and Presbyterian in constitution
- 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
- congregate housing — a type of housing in which each individual or family has a private bedroom or living quarters but shares with other residents a common dining room, recreational room, or other facilities.
- connected subgraph — (mathematics) A connected graph consisting of a subset of the nodes and edges of some other graph.
- 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.
- cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
- counter-hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
- cushing's syndrome — a medical condition characterized by obesity, hypertension, excessive hair growth, etc., caused by an overactive adrenal gland or large doses of corticosteroids
- destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
- devil's paintbrush — a perennial European hawkweed (Hieracium aurantiacum) with leafless flower stalks bearing a cluster of orange-red heads: now a common weed in N U.S. and Canada
- duchenne dystrophy — the most common form of muscular dystrophy, usually affecting only boys
- duty-free shopping — the making of duty-free purchases
- equine herpesvirus — a viral disease of horses that may cause respiratory signs, abortion, neonatal death, and paresis. A vaccine is available against this disease
- 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
- forethoughtfulness — The condition of being forethoughtful.
- fracture toughness — The fracture toughness of a material is how likely it is to resist fracture.
- front of the house — façade of residential building, house front
- furnishing fabrics — fabrics used to make and cover furniture
- get one's irish up — of, relating to, or characteristic of Ireland, its inhabitants, or their language.
- glomerulonephritis — a kidney disease affecting the capillaries of the glomeruli, characterized by albuminuria, edema, and hypertension.
- government housing — housing owned and managed by the federal or state government, which is rented out to tenants, esp as a form of affordable housing
- 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.
- greenhouse warming — the increase in the mean temperature of the earth attributed to the greenhouse effect
- ha ha only serious — (SF fandom, originally as mutation of HHOK, "Ha Ha Only Kidding") A phrase (often seen abbreviated as HHOS) that aptly captures the flavour of much hacker discourse. Applied especially to parodies, absurdities, and ironic jokes that are both intended and perceived to contain a possibly disquieting amount of truth, or truths that are constructed on in-joke and self-parody. The Jargon File contains many examples of ha-ha-only-serious in both form and content. Indeed, the entirety of hacker culture is often perceived as ha-ha-only-serious by hackers themselves; to take it either too lightly or too seriously marks a person as an outsider, a wannabee, or in larval stage. For further enlightenment on this subject, consult any Zen master. See also AI koan.
- handlebar mustache — A handlebar mustache is a long thick mustache with curled ends.
- hash house slinger — a person who serves in a cheap cafe
- head and shoulders — If you say that someone or something stands head and shoulders above other people or things, you mean that they are a lot better than them.
- helicopter gunship — military attack helicopter
- heuristics testing — failure-directed testing
- highbush cranberry — a shrub, Viburnum trilobum, of northern North America, having broad clusters of white flowers and edible scarlet berries.
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