15-letter words containing r, h, d, n
- good king henry — a European, chenopodiaceous weed, Chenopodium bonus-henricus, naturalized in North America, having spinachlike leaves.
- good-king-henry — a European, chenopodiaceous weed, Chenopodium bonus-henricus, naturalized in North America, having spinachlike leaves.
- goodheartedness — The quality of being goodhearted.
- grandparenthood — The state of being a grandparent.
- 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.
- great sanhedrin — Sanhedrin (def 1).
- great-sanhedrin — Also called Great Sanhedrin. the highest council of the ancient Jews, consisting of 71 members, and exercising authority from about the 2nd century b.c.
- greenland whale — an arctic right whale, Balaena mysticetus, that is black with a cream-coloured throat
- grind to a halt — If a country's economy or something such as a process grinds to a halt, it gradually becomes slower or less active until it stops.
- 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.
- gynandromorphic — (of an organism) Having male and female characteristics.
- hale and hearty — in good health
- half-round file — a file having a semicircular cross-section
- half-understood — partially understood
- halfheartedness — The characteristic of being half-hearted.
- hard mint candy — a hardened mint-flavoured sweet
- hard of hearing — partially deaf
- hardhead sponge — any of several commercial sponges, as Spongia officinalis dura, of the West Indies and Central America, having a harsh, fibrous, resilient skeleton.
- hardheartedness — The state of being hardhearted.
- hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures
- 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
- haute-normandie — a region of NW France, on the English Channel: generally fertile and flat
- have a derry on — to have a prejudice or grudge against
- hay conditioner — either of two machines, one designed to crush stems of hay, the other to break and bend them, in order to cause more rapid and even drying
- hazard analysis — risk assessment
- hearing ear dog — a dog that has been trained to alert a hearing-impaired person to sounds, as a telephone ringing or dangerous noises.
- hearing-ear dog — a dog that has been trained to alert a hearing-impaired person to sounds, as a telephone ringing or dangerous noises.
- heart condition — cardiac disorder
- heart tamponade — tamponade (def 2).
- hearth and home — domestic realm
- hebrew calendar — the lunisolar calendar used by Jews, as for determining religious holidays, that is reckoned from 3761 b.c. and was established by Hillel II in the 4th century a.d., the calendar year consisting of 353 days (defective year) 354 days (regular year) or 355 days (perfect year or abundant year) and containing 12 months: Tishri, Heshvan, Kislev, Tevet, Shevat, Adar, Nisan, Iyar, Sivan, Tammuz, Av, and Elul, with the 29-day intercalary month of Adar Sheni added after Adar seven times in every 19-year cycle in order to adjust the calendar to the solar cycle. The Jewish ecclesiastical year begins with Nisan and the civil year with Tishri.
- hemadynamometer — An instrument by which the pressure of the blood in the arteries, or veins, is measured by the height to which it will raise a column of mercury.
- henry cavendish — Henry, 1731–1810, English chemist and physicist.
- herbal medicine — the use of herbs to treat illness
- hereditarianism — a person who believes that differences between individuals or groups, including moral and intellectual attributes, are predominantly determined by genetic factors (opposed to environmentalist).
- hereditarianist — a person who believes in the doctrine of hereditarianism
- hernando cortes — Hernando [er-nahn-daw] /ɛrˈnɑn dɔ/ (Show IPA), Hernán [er-nahn] /ɛrˈnɑn/ (Show IPA), 1485–1547, Spanish conqueror of Mexico.
- hernando cortez — Hernando [er-nahn-daw] /ɛrˈnɑn dɔ/ (Show IPA), Hernán [er-nahn] /ɛrˈnɑn/ (Show IPA), 1485–1547, Spanish conqueror of Mexico.
- heroin overdose — an excessive amount of the drug heroin, sufficient to cause illness or death
- high-principled — possessing or displaying very high moral or ethical principles
- 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.
- holding furnace — a small furnace for holding molten metal produced in a larger melting furnace at a desired temperature for casting.
- holding pattern — a traffic pattern for aircraft at a specified location (holding point) where they are ordered to remain until permitted to land or proceed.
- hole-and-corner — secretive; clandestine; furtive: The political situation was full of hole-and-corner intrigue.
- hook and ladder — a fire engine, usually a tractor-trailer, fitted with long, extensible ladders and other equipment.
- horned cucumber — a tropical African plant, Cucumis metuliferus, having fruit with spiky, orange skin and jellylike pulp that tastes like cucumbers.
- horned oak gall — a small, round tumor, formed around wasp eggs laid in the branches of a pin oak tree, that disrupts the flow of nutrients to the tree, with consequent defoliation and death.