15-letter words containing a, l, i, u
- arabic numerals — the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and the 0 (zero) that originated in India; Hindu-Arabic numerals
- architecturally — of or relating to architecture: architectural metals.
- argumentatively — fond of or given to argument and dispute; disputatious; contentious: The law students were an unusually argumentative group.
- arrivals lounge — a waiting area for people meeting passengers
- artificial turf — any of various synthetic, carpetlike materials made to resemble turf and used as a playing surface for football and baseball fields, to cover patios, etc.
- asclepiadaceous — of, relating to, or belonging to the Asclepiadaceae, a family of mostly tropical and subtropical flowering plants, including the milkweed and swallowwort, having pollen in the form of a waxy mass (pollinium): now usually regarded as a subfamily of the Apocynaceae
- asian influenza — pandemic influenza caused by a strain of the influenza virus first isolated in Singapore in 1957
- astronautically — In an astronautic way.
- atlantic puffin — any of several alcidine sea birds of the genera Fratercula and Lunda, having a short neck and a large, compressed, grooved bill, as F. arctica (Atlantic puffin) of the North Atlantic.
- 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.
- audience appeal — the quality of being attractive to an audience
- auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
- aurora borealis — the aurora seen around the North Pole
- australian alps — a mountain range in SE Australia, in E Victoria and SE New South Wales. Highest peak: Mount Kosciuszko, 2195 m (7316 ft)
- australian mist — a breed of medium-sized cat with a short spotted or marbled coat
- australian pine — casuarina
- authenticatable — to establish as genuine.
- authoritatively — having due authority; having the sanction or weight of authority: an authoritative opinion.
- autocannibalism — The eating of part of one's own body.
- autocollimation — the process used in an autocollimator.
- autocorrelation — the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent
- autocorrelative — Relating to autocorrelation.
- autoinoculation — the inoculation of microorganisms (esp viruses) from one part of the body into another, usually in the form of a vaccine
- autolithography — a lithographic technique by which the artist draws or traces with a brush and pen directly on a stone or plate.
- automatic pilot — An automatic pilot or an autopilot is a device in an aircraft that automatically keeps it on a particular course.
- automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
- automorphically — in an automorphic manner
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- autotrophically — through an autotrophic process
- auxiliary rotor — the tail rotor of a helicopter, used for directional and rotary control
- avian influenza — an acute, usually fatal viral disease of chickens and other domestic and wild birds except pigeons, characterized by sudden onset of symptoms including fever, swollen head and neck, bluish-black comb and wattle, and difficult respiration.
- ball ammunition — live small-arms ammunition
- ballpark figure — approximate number
- banana republic — Small, poor countries that are politically unstable are sometimes referred to as banana republics.
- bangtail muster — a roundup of cattle to be counted, each one having the hairs on its tail docked as it is counted
- banqueting hall — a large building or room used for feasts
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barium sulphate — a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO4
- bateau neckline — a wide, high neckline that follows the curve of the collarbone and ends in points on the shoulder seams.
- bathurst island — an island off the coast of N Nunavut, Canada, in the Arctic Archipelago: present south of the North Magnetic Pole nearby. 7609 sq. mi. (19,707 sq. km).
- bear animalcule — tardigrade (def 3).
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- biblia pauperum — any of the picture books illustrating Biblical events and usually containing a short text, used chiefly in the Middle Ages for purposes of religious instruction.
- bioaccumulation — the process in which industrial waste, toxic chemicals, etc. gradually accumulate in living tissue
- bishop auckland — a town in N England, in central Durham: seat of the bishops of Durham since the 12th century: light industries. Pop: 24 764 (2001)
- 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 guillemot — a common guillemot, Cepphus grylle: its summer plumage is black with white wing patches and its winter plumage white with greyish wings
- 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)
- blindman's buff — a game in which a blindfolded player has to catch and identify another player