13-letter words containing d, r, u, n
- ground colour — a colour on which other colours are superimposed to create a pattern
- ground effect — the improvement to the aerodynamic qualities of a low-slung motor vehicle resulting from a cushion of air beneath it
- ground return — Ground return is the return path for an electrical circuit made by connections to ground at each end.
- ground sluice — a trench, cut through a placer or through bedrock, through which a stream is diverted in order to dislodge and wash the gravel.
- ground stroke — a stroke made by hitting the ball after it has bounced from the ground. Compare volley (def 4b).
- ground tackle — equipment, as anchors, chains, or windlasses, for mooring a vessel away from a pier or other fixed moorings.
- ground troops — soldiers positioned on the ground
- ground-to-air — (of weapons) designed to be fired at aircraft from the ground
- groundbreaker — a person who is an originator, innovator, or pioneer in a particular activity.
- groundhog day — February 2, in most parts of the U.S., the day on which, according to legend, the groundhog first emerges from hibernation. If it is a sunny day and the groundhog sees its shadow, six more weeks of wintry weather are predicted.
- groundkeepers — Plural form of groundkeeper.
- groundnut oil — a mild-tasting oil extracted from peanuts and used in cooking
- groundskeeper — a person who is responsible for the care and maintenance of a particular tract of land, as an estate, a park, or a cemetery.
- groundstrokes — Plural form of groundstroke.
- groundworkers — Plural form of groundworker.
- guard against — prevent
- gunpowder tea — an explosive mixture, as of potassium nitrate, sulfur, and charcoal, used in shells and cartridges, in fireworks, for blasting, etc.
- h and d curve — characteristic curve.
- hard currency — money that is backed by gold reserves and is readily convertible into foreign currencies.
- hardship fund — funding offered or applied for due to financial difficulties
- harlequinades — Plural form of harlequinade.
- harold burton — Harold Hitz [hits] /hɪts/ (Show IPA), 1888–1964, associate justice of the U.S. Supreme Court 1945–58.
- hazardousness — The condition of being hazardous.
- herd immunity — the immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection.
- here document — (operating system) Data included in a Unix shell script or Perl script using the "<<" syntax.
- hollow-ground — ground so as to produce a concave surface or surfaces behind a cutting edge: the hollow-ground blade of an ice skate.
- honey buzzard — a long-tailed Old World hawk, Pernis apivorus, that feeds on the larvae of bees as well as on small rodents, reptiles, and insects.
- horned scully — a tapered block of concrete with projecting steel rails, placed under water to tear holes in the bottoms of boats.
- house-trained — housebroken.
- housed string — a string of a stair (housed stair) receiving the ends of the risers or treads in a series of housings.
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- hundredweight — Also called cental, quintal. a unit of avoirdupois weight commonly equivalent to 100 pounds (45.359 kilograms) in the U.S. Abbreviation: cwt.
- hunting sword — a short, light saber of the 18th century, having a straight or slightly curved blade.
- hyaluronidase — Biochemistry. a mucolytic enzyme found in the testes, in snake venom, and in hemolytic streptococci and certain other bacteria, that decreases the viscosity of the intercellular matrix by breaking down hyaluronic acid.
- hydraulicking — a type of mining that uses water to move rock
- hydronium ion — the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution.
- hypochondrium — either of two regions of the abdomen, situated on each side of the epigastrium and above the lumbar regions.
- ill-nourished — underfed or inadequately fed
- in due course — a direction or route taken or to be taken.
- inarticulated — Not articulated; not connected by a joint.
- incredulously — not credulous; disinclined or indisposed to believe; skeptical.
- indentureship — a deed or agreement executed in two or more copies with edges correspondingly indented as a means of identification.
- index futures — a form of financial futures based on projected movement of a share price index, such as the Financial Times Stock Exchange 100 Share Index
- india drugget — drugget (def 1).
- indian runner — one of a breed of domestic ducks.
- indian summer — a period of mild, dry weather, usually accompanied by a hazy atmosphere, occurring usually in late October or early November and following a period of colder weather.
- indian turnip — the jack-in-the-pulpit.
- indirect jump — (programming) A jump via an indirect address, i.e. the jump instruction contains the address of a memory location that contains the address of the next instruction to execute. The location containing the address to jump to is sometimes called a vector. Indirect jumps make normal code hard to understand because the jump target is a run-time property of the program that depends on the execution history. They are useful for, e.g. allowing user code to replace operating system code or setting up event handlers.
- indisturbance — Freedom from disturbance; calmness; repose.
- indo-european — a large, widespread family of languages, the surviving branches of which include Italic, Slavic, Baltic, Hellenic, Celtic, Germanic, and Indo-Iranian, spoken by about half the world's population: English, Spanish, German, Latin, Greek, Russian, Albanian, Lithuanian, Armenian, Persian, Hindi, and Hittite are all Indo-European languages. Compare family (def 14).