18-letter words containing u, y, s
- entry requirements — the types and grades of examination required to enter a university
- evolution strategy — (ES) A kind of evolutionary algorithm where individuals (potential solutions) are encoded by a set of real-valued "object variables" (the individual's "genome"). For each object variable an individual also has a "strategy variable" which determines the degree of mutation to be applied to the corresponding object variable. The strategy variables also mutate, allowing the rate of mutation of the object variables to vary. An ES is characterised by the population size, the number of offspring produced in each generation and whether the new population is selected from parents and offspring or only from the offspring. ES were invented in 1963 by Ingo Rechenberg, Hans-Paul Schwefel at the Technical University of Berlin (TUB) while searching for the optimal shapes of bodies in a flow.
- eyewitness account — a description given by someone who was present at an event
- fast-food industry — the industry surrounding fast-food restaurants
- first duke of york — a member of the royal house of England that ruled from 1461 to 1485.
- fissure of sylvius — lateral fissure.
- fluorodeoxyglucose — (carbohydrate) A fluorine analog of glucose that is used in positron emission tomography.
- frequency response — the effectiveness with which a circuit, device, or system processes and transmits signals fed into it, as a function of the signal frequency.
- frequency spectrum — The frequency spectrum of an electrical signal is the distribution of the amplitudes and phases of each frequency component against frequency.
- gamblers anonymous — an organization that holds group meetings to help people who are addicted to gambling
- gastroduodenostomy — See under gastroenterostomy.
- geodetic surveying — the surveying of the earth's surface, making allowance for its curvature and giving an accurate framework for smaller-scale surveys
- gettysburg address — the notable short speech made by President Lincoln on November 19, 1863, at the dedication of the national cemetery at Gettysburg, Pa.
- give someone curry — to assault (a person) verbally or physically
- goya (y lucientes) — Fran‧ˈcis‧co Jo‧ˈsé‧ de (fʀɑnˈθiskɔhɔˈsɛ ðɛ) ; fränt hēsˈk^ōh^ōseˈ the) 1746-1828; Sp. painter
- gulf stream system — a major ocean-current system consisting of the Gulf Stream and the Florida and North Atlantic currents.
- 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.
- haud your wheesht! — be silent! hush!
- highbush blueberry — a spreading, bushy shrub, Vaccinium corymbosum, of eastern North America, having small, urn-shaped, white or pinkish flowers, and bluish-black edible fruit, growing about 10 feet (3 meters) high.
- highbush cranberry — a shrub, Viburnum trilobum, of northern North America, having broad clusters of white flowers and edible scarlet berries.
- honeysuckle family — the plant family Caprifoliaceae, typified by shrubs and woody vines having opposite leaves, clusters of usually flaring, narrow, tubular flowers, and various types of fruit, and including the elder, honeysuckle, snowberry, twinflower, and viburnum.
- hundred years' war — the series of wars between England and France, 1337–1453, in which England lost all its possessions in France except Calais.
- hungry programmers — (body) A group of programmers producing free software.
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hypersexualisation — Alternative spelling of hypersexualization.
- hypersexualization — The act or process of hypersexualizing.
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- ignatius of loyola — Loyola, Saint Ignatius.
- in your mind's eye — If you see something in your mind's eye, you imagine it and have a clear picture of it in your mind.
- incommensurability — not commensurable; having no common basis, measure, or standard of comparison.
- inconsequentiality — of little or no importance; insignificant; trivial.
- industrial hygiene — the science that assesses, controls, and prevents occupational factors or sources of stress in the workplace that may significantly affect the health and well-being of employees or of the community in general
- involuntary muscle — muscle: contracts involuntarily
- jerusalem syndrome — a delusive condition affecting some visitors to Jerusalem in which the sufferer identifies with a major figure from his or her religious background
- jump discontinuity — a discontinuity of a function at a point where the function has finite, but unequal, limits as the independent variable approaches the point from the left and from the right. Compare jump (def 52).
- keep your shirt on — refrain from losing your temper (often used as an exhortation to another)
- kentucky bluegrass — a grass, Poa pratensis, of the Mississippi valley, used for pasturage and lawns.
- lay down your arms — If soldiers lay down their arms, they stop fighting and give up their weapons.
- lifestyle business — a small business in which the owner is more anxious to pursue interests that reflect his or her lifestyle than to make more than a comfortable living
- lonely hearts club — a club for people who are trying to find a lover or a friend
- luminous intensity — the luminous flux in lumens emitted per unit solid angle by a light source, measured in candles.
- many happy returns — When it is someone's birthday, people sometimes say 'Many happy returns' to them as a way of greeting them.
- mucopolysaccharide — (formerly) glycosaminoglycan.
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- music to your ears — If something that you hear is music to your ears, it makes you feel very happy.
- mutual aid society — A mutual aid society is an organization that provides benefits or other help to its members when they are affected by things such as death, sickness, disability, old age, or unemployment.
- mutually exclusive — of or relating to a situation involving two or more events, possibilities, etc., in which the occurrence of one precludes the occurrence of the other: mutually exclusive plans of action.
- mutually recursive — recursion
- natural philosophy — natural science.
- 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.