12-letter words containing a, p, o
- autoexposure — A device that sets the exposure automatically on a camera or other piece of equipment.
- autographing — Present participle of autograph.
- autohypnosis — the process or result of self-induced hypnosis
- autohypnotic — Of or pertaining to autohypnosis; self-hypnotizing.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autoptically — in an autoptical manner
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- azcapotzalco — a city in central Mexico: suburb of Mexico City; a cultural center during the pre-Columbian period.
- azophenylene — phenazine.
- bachelor pad — a flat in which a bachelor lives
- bachelorship — the state of being a bachelor; bachelorhood
- back-stopped — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- backstopping — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- baden-powell — Robert Stephenson Smyth (smɪθ, smaɪθ), 1st Baron Baden-Powell. 1857–1941, British general, noted for his defence of Mafeking (1899–1900) in the Boer War; founder of the Boy Scouts (1908) and (with his sister Agnes) the Girl Guides (1910)
- baked potato — a large potato baked in its skin
- ballad opera — an opera consisting of popular tunes to which appropriate words have been set, interspersed with spoken dialogue
- ballot paper — A ballot paper is a piece of paper on which you indicate your choice or opinion in an election or ballot.
- band of hope — a society promoting lifelong abstention from alcohol among young people: founded in Britain in 1847
- bank deposit — money placed in a bank account
- barge couple — either of a pair of outside rafters along the gable end of a roof
- barophoresis — the diffusion of suspended particles at a rate dependent on external forces
- baroreceptor — a collection of sensory nerve endings, principally in the carotid sinuses and the aortic arch, that monitor blood pressure changes in the body
- barrow point — the northernmost tip of Alaska, on the Arctic Ocean
- basidiocarps — Plural form of basidiocarp.
- basidiospore — one of the spores, usually four in number, produced in a basidium
- basing point — a geographical location from which freight charges are computed by the seller regardless of the point from which the goods are shipped.
- bathmophobia — The fear of stairs and slopes.
- bathophilous — (of an organism) living in very deep water
- battle group — a group of warships usually consisting of at least one aircraft carrier, other surface ships, submarines, landing craft, etc
- beam compass — an instrument for drawing large circles or arcs, consisting of a horizontal beam along which two vertical legs slide
- bean sprouts — the sprouts of newly germinated mung beans, eaten as a vegetable, esp in Chinese dishes
- beat up (on) — to give a beating to; thrash
- beer parlour — a room in a tavern, hotel, etc in which beer is served
- benzal group — the bivalent group C 7 H 6 –, derived from benzaldehyde.
- benzoapyrene — a carcinogenic chemical in tobacco smoke
- betanaphthol — a colorless, crystalline isomer of naphthol, C10H8O, used as an antiseptic and parasiticide
- bibliography — A bibliography is a list of books on a particular subject.
- bibliophobia — an aversion to books
- biogeography — the branch of biology concerned with the geographical distribution of plants and animals
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- bishop's-cap — any of a genus (Mitella) of small woodland plants of the saxifrage family, with two-lobed seedcases shaped like a bishop's hat
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black poplar — a Eurasian tree, Populus nigra
- black powder — gunpowder as used in sports involving modern muzzleloading firearms
- black sapote — a tropical American tree, Diospyros digyna, related to the persimmon, having sweet, edible, green fruit that turns black when ripe.
- blastosphere — blastula
- blood plasma — the pale yellow fluid portion of the blood; blood from which red and white blood cells and platelets have been removed
- blood sample — an amount of a person's blood taken from their body for use in medical tests
- blood spavin — a disease of the hock joint of horses in which enlargement occurs because of collected fluids (bog spavin) bony growth (bone spavin) or distention of the veins (blood spavin)