12-letter words containing a, d, o, l
- grand coulee — a dry canyon in central Washington: cut by the Columbia River in the glacial period. 52 miles (84 km) long; over 400 feet (120 meters) deep.
- ground alert — the state of waiting for orders in or near combat airplanes ready to take to the air at once.
- ground cable — a heavy chain for securing permanent floating moorings, as a number of mooring buoys.
- ground fault — the momentary, usually accidental, grounding of a conducting wire.
- ground glass — Optics. glass that has had its polished surface removed by fine grinding and that is used to diffuse light.
- ground plane — (in perspective drawing) the theoretical horizontal plane receding from the picture plane to the horizon, beginning at the level of the base line.
- ground plate — Electricity. a metal plate for making a ground connection to the earth.
- gulf of aden — a waterway in the Arabian sea between Yemen and Somalia and connecting with the Red Sea
- halcyon days — period regarded with nostalgia
- half a dozen — six
- half holiday — a holiday limited to half a working day or half an academic day.
- half-blooded — having parents of two different breeds, species, or the like.
- half-covered — to be or serve as a covering for; extend over; rest on the surface of: Snow covered the fields.
- half-drowned — to die under water or other liquid of suffocation.
- half-forward — any of three forwards positioned between the centre line and the forward line
- half-holiday — a holiday limited to half a working day or half an academic day.
- hall bedroom — a small bedroom off a corridor, esp. a small bedroom formed by partitioning off the end of an upstairs corridor
- hammarskjold — Dag Hjalmar [dahg yahl-mahr] /dɑg ˈyɑl mɑr/ (Show IPA), 1905–61, Swedish statesman: Secretary General of the United Nations 1953–61; Nobel Peace Prize 1961.
- hand-holding — the act of holding hands, especially as a sign or token of affection.
- harold stark — Harold Raynsford [reynz-ferd] /ˈreɪnz fərd/ (Show IPA), 1880–1972, U.S. admiral.
- headlongness — Headlong quality or speed; precipitateness.
- headstrongly — In a headstrong manner.
- hebdomadally — taking place, coming together, or published once every seven days; weekly: hebdomadal meetings; hebdomadal groups; hebdomadal journals.
- heel-and-toe — noting a pace, as in walking contests, in which the heel of the front foot touches ground before the toes of the rear one leave it.
- heliographed — Simple past tense and past participle of heliograph.
- hemodialyses — Plural form of hemodialysis.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemodialyzer — artificial kidney.
- hemorrhoidal — Usually, hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of the anal skin (external hemorrhoid)
- hendecagonal — (geometry) Having eleven sides an angles; similar to a hendecagon.
- heterodactyl — having the first and fourth toes directed backward, and the second and third forward, as in trogons.
- hexachloride — a chloride containing six atoms of chlorine.
- hexadecapole — (physics) Anything having sixteen poles or electrodes, or a combination of four quadrupoles.
- hexafluoride — a fluoride containing six atoms of fluorine.
- high and low — having a great or considerable extent or reach upward or vertically; lofty; tall: a high wall.
- hold against — resent sb for sth
- holding tank — a tank for the temporary storage of a substance.
- holiday camp — In Britain, a holiday camp is a place which provides holiday accommodation and entertainment for large numbers of people.
- holiday home — a home that people own in order to holiday in and that is in a different location to the home they usually live in
- holidaymaker — vacationer.
- hollingshead — Holinshed.
- hollywoodian — a person who works for the motion-picture industry located in Hollywood, Calif.
- horse-dealer — a person who buys and sells horses as a profession
- hospital bed — a bed having side rails that can be raised or lowered and a mattress base in three jointed sections so that the head, foot, or middle may be raised by a crank or motor, allowing a patient to lie in various positions, as a therapeutic aid or for comfort.
- hospitalised — to place in a hospital for medical care or observation: The doctor hospitalized grandfather as soon as she checked his heart.
- hospitalized — to place in a hospital for medical care or observation: The doctor hospitalized grandfather as soon as she checked his heart.
- humboldt bay — an inlet of the Pacific Ocean in NW California.
- hydrocephaly — an accumulation of serous fluid within the cranium, especially in infancy, due to obstruction of the movement of cerebrospinal fluid, often causing great enlargement of the head; water on the brain.
- hydroelastic — undergoing a change in elasticity as a result of the flow of water or another fluid
- hydrological — the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere.