12-letter words containing a, d, o
- gourmandizer — One who gourmandizes.
- grace period — a period of time after a payment becomes due, as of a loan or life-insurance premium, before one is subject to penalties or late charges or before the loan or policy is canceled.
- grade school — an elementary school that has its pupils grouped or classified into grades.
- gradeflation — grade inflation.
- grana padano — a rich semifat hard cheese with a granular texture, often used grated, esp on pasta dishes and soups
- grand canyon — a gorge of the Colorado River in N Arizona. over 200 miles (320 km) long; 1 mile (1.6 km) deep.
- 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.
- grand dragon — a high-ranking official of the Ku Klux Klan.
- grand rounds — a formal hospital meeting at which physicians discuss interesting medical cases.
- grandmothers — Plural form of grandmother.
- granodiorite — a coarse-grained acid igneous rock containing almost twice as much plagioclase as orthoclase: intermediate in composition between granite and diorite
- graving dock — an excavated shore dry dock for the repair and maintenance of ships.
- green dragon — a mythical monster generally represented as a huge, winged reptile with crested head and enormous claws and teeth, and often spouting fire.
- grosswardein — German name of Oradea.
- 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 cedar — a ground pine, Lycopodium complanatum.
- 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.
- ground shark — any of various requiem sharks, especially of the genus Carcharhinus.
- ground staff — The people who are paid to maintain a sports ground are called the ground staff.
- ground state — the state of least energy of a particle, as an atom, or of a system of particles.
- ground track — the path on the earth's surface below an aircraft, missile, rocket, or spacecraft.
- ground water — the water beneath the surface of the ground, consisting largely of surface water that has seeped down: the source of water in springs and wells.
- gulf of aden — a waterway in the Arabian sea between Yemen and Somalia and connecting with the Red Sea
- gustave dore — (Paul) Gustave [pawl gy-stav] /pɔl güˈstav/ (Show IPA), 1832?–83, French painter, illustrator, and sculptor.
- gypsum board — wallboard composed primarily of gypsum and often used as sheathing.
- hadrosaurine — Hadrosaurid.
- haemodynamic — Alternative spelling of hemodynamic.
- haemorrhoids — Plural form of haemorrhoid.
- haemosiderin — Alternative form of hemosiderin.
- 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.
- hamming code — (algorithm) Extra, redundant bits added to stored or transmitted data for the purposes of error detection and correction. Named after the mathematician Richard Hamming, Hamming codes greatly improve the reliability of data, e.g. from distant space probes, where it is impractical, because of the long transmission delay, to correct errors by requesting retransmission.
- hand of writ — handwriting; penmanship.
- hand to hand — of, belonging to, using, or used by the hand.
- hand-holding — the act of holding hands, especially as a sign or token of affection.
- hand-me-down — an article of clothing passed on to another person after being used, outgrown, etc.: The younger children wore the hand-me-downs of the older ones.
- hand-to-hand — close to one's adversary; at close quarters: hand-to-hand combat.
- handsomeness — The quality of being handsome.