15-letter words containing a, e, o
- airborne attack — an attack involving airborne troops
- airmail edition — an edition of a newspaper that is printed on very thin paper so it is easier and cheaper to distribute
- aix-en-provence — a city and spa in SE France: the medieval capital of Provence. Pop: 145 721 (2006)
- albany congress — a meeting of delegates from seven American colonies, held in 1754 at Albany, New York, at which Benjamin Franklin proposed a plan (Albany Plan of Union) for unifying the colonies.
- albemarle sound — an inlet of the Atlantic in NE North Carolina. Length: about 96 km (60 miles)
- albert memorial — monument to Prince Albert of England in Kensington Gardens, London: 175 ft (53 m) high
- alcohol content — the amount of alcohol that is present in an alcoholic drink
- alder buckthorn — a Eurasian rhamnaceous shrub, Frangula alnus, with small greenish flowers and black berry-like fruits
- alexandroupolis — a port in NE Greece, in W Thrace. Pop: 52 720 (2001 est)
- algaroth powder — antimony oxychloride.
- algebra of sets — a nonempty collection of sets having the property that the union of two sets of the collection is a set of the collection and the complement of each set of the collection is a set in the collection.
- all mockered up — dressed up
- all of a sudden — If something happens all of a sudden, it happens quickly and unexpectedly.
- all-or-none law — the principle that under given conditions the response of a nerve or muscle fiber to a stimulus at any strength above the threshold is the same: the muscle or nerve responds completely or not at all.
- all-you-can-eat — An all-you-can-eat buffet or restaurant is a buffet or restaurant at which you pay a fixed price, no matter how much or how little you eat.
- allegoricalness — the quality of being allegorical
- allelochemicals — Plural form of allelochemical.
- allende gossens — Salvador, 1908–73, Chilean political leader: president 1970–73.
- alligator shear — heavy shears for cutting metal slabs.
- allorecognition — The ability of an individual organism to distinguish its own tissues from those of another.
- allotetraploidy — the condition of being an allotetraploid
- almirante brown — a city in E Argentina, near Buenos Aires.
- alopecia areata — loss of hair in circumscribed patches.
- alpha and omega — the first and last, a phrase used in Revelation 1:8 to signify God's eternity
- alpha geminorum — Castor
- alpha-cellulose — a refined, insoluble form of cellulose derived from cotton or wood pulp, and used in manufacturing
- alphabetisation — The act or process of arranging in alphabetical order.
- alphabetization — Alternative form of alphabetisation.
- alpine accentor — a small bird of the sparrow family, Prunella collaris, found especially in mountain regions of S Europe and Asia
- alpine combined — a competition for Alpine skiers in a combination of downhill and slalom races, the winner having the highest total score.
- alsace-lorraine — an area of NE France, comprising the modern regions of Alsace and Lorraine: under German rule 1871–1919 and 1940–44. Area: 14 522 sq km (5607 sq miles)
- altar of repose — a pedestal or niche upon which the sacraments are preserved from Maundy Thursday to Good Friday.
- alte pinakothek — a museum in Munich housing a collection of paintings dating from the Middle Ages to the late 18th century
- aluminium oxide — a white or colourless insoluble powder occurring naturally as corundum and used in the production of aluminium and its compounds, abrasives, glass, and ceramics. Formula: Al2O3
- aluminosilicate — a silicate in which some of the silicon in the tetrahedral unit SiO4 has been replaced by aluminium
- aluminum borate — a white, granular, water-insoluble powder, 2Al 2 O 3 ⋅B 2 O 3 ⋅3H 2 O, used chiefly in the manufacture of crown glass.
- aluminum bronze — any of several alloys containing a high percentage of copper with from 5 to 11 percent aluminum and varying amounts of iron, nickel, manganese, and other elements.
- amador guerrero — Manuel [mah-nwel] /mɑˈnwɛl/ (Show IPA), 1833–1909, Panamanian political leader: first president of Panama 1904–08.
- amaryllidaceous — of, relating to, or belonging to the Amaryllidaceae, a family of widely cultivated flowering plants having bulbs and including the amaryllis, snowdrop, narcissus, and daffodil
- ambrose channel — a ship channel at the entrance to New York harbor, near Sandy Hook. 7½ miles (12 km) long.
- ambrosia beetle — any of various small beetles of the genera Anisandrus, Xyleborus, etc, that bore tunnels into solid wood, feeding on fungi growing in the tunnels: family Scolytidae (bark beetles)
- ambulatory care — care given at a hospital to non-resident patients, including minor surgery and outpatient treatment
- amegakaryocytic — Characterized by a lack of megakaryocytes.
- amenity society — a voluntary society established with the purpose of preserving historic art and architecture
- american copper — a malleable, ductile, metallic element having a characteristic reddish-brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu; atomic weight: 63.54; atomic number: 29; specific gravity: 8.92 at 20°C.
- american cotton — upland cotton.
- american gothic — a painting (1930) by Grant Wood.
- american legion — an association of former member of the US armed forces
- american smooth — a style of competitive ballroom dancing which incorporates elements of Latin dance
- american wigeon — a bird of North America, Anas americana, that is similar to the wigeon; the male has a white crown