15-letter words containing h, u, d
- graduate school — a school, usually a division of a university, offering courses leading to degrees more advanced than the bachelor's degree.
- graph reduction — A technique invented by Chris Wadsworth where an expression is represented as a directed graph (usually drawn as an inverted tree). Each node represents a function call and its subtrees represent the arguments to that function. Subtrees are replaced by the expansion or value of the expression they represent. This is repeated until the tree has been reduced to a value with no more function calls (a normal form). In contrast to string reduction, graph reduction has the advantage that common subexpressions are represented as pointers to a single instance of the expression which is only reduced once. It is the most commonly used technique for implementing lazy evaluation.
- growth industry — an industry that is experiencing rapid growth
- guard of honour — A guard of honour is an official parade of troops, usually to celebrate or honour a special occasion, such as the visit of a head of state.
- half-round file — a file having a semicircular cross-section
- half-understood — partially understood
- hamamelidaceous — belonging to the Hamamelidaceae, the witch hazel family of plants.
- hard-luck story — a story of misfortune designed to elicit sympathy
- hardship clause — a clause in a contract which covers unforeseen events that would make it more difficult for one party to complete the contract, and in which case offers alternative terms
- hare and hounds — an outdoor game in which certain players, the hares, start off in advance on a long run, scattering small pieces of paper, called the scent, with the other players, the hounds, following the trail so marked in an effort to catch the hares before they reach a designated point.
- harun al-rashid — a.d. 764?–809, caliph of Baghdad 786–809: one of the greatest Abbasids, he was made almost a legendary hero in the Arabian Nights.
- harun ar-rashid — a.d. 764?-809; caliph of Baghdad (786-809): given popular fame as a hero of The Arabian Nights
- hausdorff space — a topological space in which each pair of points can be separated by two disjoint open sets containing the points.
- haute-normandie — a region of NW France, on the English Channel: generally fertile and flat
- have had enough — be weary, exasperated
- hazardous waste — any industrial by-product, especially from the manufacture of chemicals, that is destructive to the environment or dangerous to the health of people or animals: Hazardous wastes often contaminate ground water.
- head-up display — an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD.
- heat-conducting — able to conduct heat or whose function is to conduct heat
- heat-conduction — the transfer of thermal energy between molecules
- hedge your bets — play it safe, lessen a risk
- hedgehog cactus — any of various rounded, usually spiny cacti of the genus Echinocereus, of the southwestern U.S. and Mexico, having bell-shaped flowers that close at night.
- heterodactylous — having the first and fourth toes directed backward, and the second and third forward, as in trogons.
- hindenburg line — a line of elaborate fortifications established by the German army in World War I, near the French-Belgian border, from Lille SE to Metz.
- hog-nosed skunk — Also called badger skunk, rooter skunk. a large, naked-muzzled skunk, Conepatus mesoleucus, common in the southwestern U.S. and Mexico, having a black coat with one broad white stripe down the back and tail.
- holding furnace — a small furnace for holding molten metal produced in a larger melting furnace at a desired temperature for casting.
- homing guidance — a method of missile guidance in which internal equipment enables it to steer itself onto the target, as by sensing the target's heat radiation
- homochlamydeous — (of a plant) having a perianth in which the sepals and petals are fused together and indistinguishable
- horned cucumber — a tropical African plant, Cucumis metuliferus, having fruit with spiky, orange skin and jellylike pulp that tastes like cucumbers.
- horse latitudes — the latitudes near 30°N or 30°S at sea, characterized by baffling winds, calms, and high barometric pressure
- horse-and-buggy — of or relating to the last few generations preceding the invention of the automobile: vivid recollections of horse-and-buggy days.
- house detective — an employee of a department store, hotel, etc., employed to prevent thefts, violations of regulations, or other forms of misconduct on the part of patrons.
- household goods — kitchenware and other utensils for use in the home
- household linen — items made of cloth, such as tablecloths, sheets, and pillowcases, that are used in the home
- how do you mean — If you say 'How do you mean?' to someone, you are asking them to explain or give more details of what they have just said.
- hughes syndrome — a condition of the autoimmune system caused by antibodies reacting against phospholipids, leading to thrombosis
- human condition — mortality
- humidifications — Plural form of humidification.
- humpback bridge — arched bridge
- hundred flowers — the 1957 political campaign in the People's Republic of China to encourage greater freedom of intellectual expression, initiated by Mao Zedong under the slogan “Let a hundred flowers bloom, let a hundred schools of thought contend.”.
- hundred's place — hundred (def 8).
- hunting leopard — the cheetah.
- huntingdonshire — a former county in E England, now part of Cambridgeshire.
- hurdle champion — a hurdler who has defeated all others in a competition
- hyaluronic acid — a mucopolysaccharide serving as a viscous medium in the tissues of the body and as a lubricant in joints.
- hybrid computer — a computer system containing both analog and digital hardware.
- hydraulic brake — a brake operated by fluid pressures in cylinders and connecting tubular lines.
- hydraulic fluid — a fluid, usually of low viscosity, as oil, used in a hydraulic system.
- hydraulic motor — a motor that converts the kinetic or potential energy of a fluid into mechanical energy.
- hydraulic press — a machine permitting a small force applied to a small piston to produce, through fluid pressure, a large force on a large piston.
- hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.