12-letter words containing a, n, i, s, o
- base bullion — smelted lead containing impurities, as gold, silver, or zinc, that are later removed.
- base station — a fixed transmitter that forms part of an otherwise mobile radio network
- basification — the process of making something alkaline
- basing point — a geographical location from which freight charges are computed by the seller regardless of the point from which the goods are shipped.
- bastinadoing — Present participle of bastinado.
- beaconsfield — a town in SE England, in Buckinghamshire. Pop: 12 292 (2001)
- bed of nails — a situation or position of extreme difficulty
- beta orionis — Rigel
- beta version — beta testing
- bio-organism — a dangerous fast-proliferating organism that could be used as the basis of a biological weapon
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- biomagnetics — the study of magnetic fields as a form of therapy
- biomagnetism — animal magnetism.
- biomechanics — the study of the mechanics of the movement of living organisms
- blastulation — the process of blastula formation
- block island — an island off the coast of and a part of Rhode Island, at the E entrance to Long Island Sound.
- block signal — a fixed railroad signal governing the movements of trains entering and using a given section of track.
- 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)
- bloodstained — Someone or something that is bloodstained is covered with blood.
- boardsailing — windsurfing
- boatsmanship — seamanship as applied to boats, especially rowboats and motorboats.
- bond washing — a series of deals in bonds made with the intention of avoiding taxation
- brainstormer — a person who brainstorms
- brisbane box — a broad-leaved evergreen tree, Tristania conferta, native to Australia, having a deciduous outer bark.
- broadcasting — Broadcasting is the making and sending out of television and radio programmes.
- buenos aires — the capital of Argentina, a major port and industrial city on the Río de la Plata estuary: became capital in 1880; university (1821). Pop: 13 349 000 (2005 est)
- bunco artist — a confidence trickster or con artist
- burkina faso — an inland republic in W Africa: dominated by Mossi kingdoms (10th–19th centuries); French protectorate established in 1896; became an independent republic in 1960; consists mainly of a flat savanna plateau. Official language: French; Mossi and other African languages also widely spoken. Religion: mostly animist, with a large Muslim minority. Currency: franc. Capital: Ouagadougou. Pop: 17 812 961 (2013 est). Area: 273 200 sq km (105 900 sq miles)
- byelorussian — Byelorussian means belonging or relating to Byelorussia or to its people or culture.
- cacophonious — cacophonous
- caenogenesis — the development of structures and organs in an embryo or larva that are adaptations to its way of life and are not retained in the adult form
- caesalpinoid — of, relating to, or belonging to the Caesalpinoideae, a mainly tropical subfamily of leguminous plants that have irregular flowers: includes carob, senna, brazil, cassia, and poinciana
- calculations — Plural form of calculation.
- calibrations — Plural form of calibration.
- caliginosity — darkness
- calumniators — Plural form of calumniator.
- calumniously — in a calumnious manner
- camp bastion — a large British military base in Helmand province, Afghanistan, built in 2006
- canalisation — The conversion of a river or other waterway to a canal.
- canine corps — a military or law enforcement body which uses dogs for the detection of explosives or drugs or for security, tracking, etc
- cannabinoids — Plural form of cannabinoid.
- canonicalise — (transitive, computing, UK) Alternative form of canonicalize.
- canonisation — Alternative spelling of canonization.
- caparisoning — Present participle of caparison.
- cape sounion — Cape, a cape in E central Greece, SE of Athens, at the tip of the Attica peninsula, in W Aegean Sea.
- capsaicinoid — (organic chemistry) Any of a class of irritant compounds, related to capsaicin, that are responsible for the heat of chilli peppers.
- captiousness — The state of being captious.
- carbocations — Plural form of carbocation.
- carbonatites — Plural form of carbonatite.
- carnivourous — Misspelling of carnivorous.