15-letter words containing o, s, t, i, n, a
- assimilationism — the theory of promoting the incorporation and mixing of different groups in society
- assimilationist — a person who favours and promotes the incorporation and mixing of different groups in society
- association law — any law governing the association of ideas
- astrodynamicist — a person who studies astrodynamics
- astronautically — In an astronautic way.
- astronavigation — celestial navigation
- at pistol point — being under or using the threat of being shot
- at short notice — Notice is used in expressions such as 'at short notice', 'at a moment's notice' or 'at twenty-four hours' notice', to indicate that something can or must be done within a short period of time.
- atlantic salmon — a valuable food and game fish, Salmo salar, mainly of northern coastal Atlantic waters or, when spawning, in freshwater streams tributary to the ocean.
- atlas mountains — a mountain system of N Africa, between the Mediterranean and the Sahara. Highest peak: Mount Toubkal, 4165 m (13 664 ft)
- atrabiliousness — The state or quality of being characterized by melancholy or glumness.
- audubon society — a North American organization devoted to the conservancy of birds
- authentications — Plural form of authentication.
- autocannibalism — The eating of part of one's own body.
- autotransfusion — a process in which a patient receives some of his or her own blood in a transfusion rather than a donor's blood
- bag on the side — An extension to an established hack that is supposed to add some functionality to the original. Usually derogatory, implying that the original was being overextended and should have been thrown away, and the new product is ugly, inelegant, or bloated. Also "to hang a bag on the side [of]". "C++? That's just a bag on the side of C." "They want me to hang a bag on the side of the accounting system."
- balanoposthitis — An inflammation of the glans penis and the prepuce.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- barry mountains — a mountain range in SE Australia, in E Victoria: part of the Australian Alps
- basic education — (in India) education in which all teaching is correlated with the learning of a craft
- bathing costume — A bathing costume is a piece of clothing that is worn for swimming, especially by women and girls.
- battle stations — the places to which soldiers, sailors, warships, etc. are assigned for a battle or an emergency
- beta conversion — (theory) A term from lambda-calculus for beta reduction or beta abstraction.
- bioastronautics — the study of the effects of space flight on living organisms
- biogasification — the conversion of organic matter into biogas.
- biostatistician — someone who studies or works professionally in the field of biostatistics
- bituminous coal — a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 107 – 3.63 × 107 J/kg
- black mountains — a mountain range running from N Monmouthshire and SE Powys (Wales) to SW Herefordshire (England). Highest peak: Waun Fach, 811 m (2660 ft)
- blast injection — the injection of liquid fuel directly into the cylinder of an internal-combustion engine using a blast of high-pressure air to atomize the spray of fuel
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- boa constrictor — A boa constrictor is a large snake that kills animals by wrapping itself round their bodies and squeezing them to death. Boa constrictors are found mainly in South and Central America and the West Indies.
- bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
- boston marriage — (especially in 19th-century New England) an intimate friendship between two women often maintaining a household together.
- brachistochrone — the curve between two points through which a body moves under the force of gravity in a shorter time than for any other curve; the path of quickest descent
- branchiostegous — branchiostegal.
- brand extension — the practice of using a well-known brand name to promote new products or services in unrelated fields
- bristol channel — an inlet of the Atlantic, between S Wales and SW England, merging into the Severn estuary. Length: about 137 km (85 miles)
- bristol fashion — clean and neat, with newly painted and scrubbed surfaces, brass polished, etc
- bronchial tubes — the bronchi or their smaller divisions
- bronze diabetes — hemochromatosis.
- brother-in-arms — a fellow soldier or comrade in a shared struggle
- cairngorm-stone — smoky quartz.
- canisterization — the process of putting (something) into a canister or canisters
- cannibalisation — Alternative form of cannibalization.
- capitalizations — Plural form of capitalization.
- capitulationism — advocacy or approval of capitulation.
- capitulationist — advocacy or approval of capitulation.
- cardinal points — the four main points of the compass: north, south, east, and west
- cartesian doubt — willful suspension of all interpretations of experience that are not absolutely certain: used as a method of deriving, by elimination of such uncertainties, axioms upon which to base theories.
- cartier-bresson — Henri (ɑ̃ri). 1908–2004, French photographer