11-letter words that end in a
- antonomasia — the substitution of a title or epithet for a proper name, such as his highness
- antseranana — a port in N Madagascar: former French naval base. Pop: 73 491 (2001)
- antsiranana — a seaport on N Madagascar.
- aortoclasia — rupture of the aorta.
- appressoria — a flattened and thickened tip of a hyphal branch, formed by some parasitic fungi, that facilitates penetration of the host plant.
- arabian sea — the NW part of the Indian Ocean, between Arabia and India
- arafura sea — a part of the W Pacific Ocean, between N Australia and SW New Guinea
- arakan yoma — a mountain range in Myanmar, between the Irrawaddy River and the W coast: forms a barrier between Myanmar and India; teak forests
- arctic skua — a predatory gull-like bird, Stercorarius parasiticus, which harasses terns or gulls into dropping or disgorging fish they have caught; it breeds in northern Eurasia and North America
- arctophilia — the practice of collecting teddy bears
- arkadelphia — a city in central Arkansas.
- ars antiqua — the style of composition characteristic of the 13th century, especially in France.
- ars poetica — the art of poetry
- arsonphobia — Pyrophobia.
- arte povera — a style of minimal art originating in Italy in the late 1960s, making use of cheap and commonly available materials such as stones, newspapers etc
- astraphobia — a fear of thunder and lightning
- astrocytoma — a tumour of the nervous system which originates in and consists mainly of astrocytes
- astrophobia — A fear of stars and celestial space.
- atchafalaya — a river in S central Louisiana, flowing S to an inlet (Atchafalaya Bay) on the Gulf of Mexico; a heavily engineered distributary of the Mississippi. 225 miles (362 km).
- atelierista — Studio teacher.
- atelophobia — The fear of imperfection or not being good enough.
- atheophobia — Fear or hatred of atheism or atheists.
- aunt jemima — Slang: Disparaging and Offensive. a black woman considered by other black people to be subservient to or to curry favor with white people.
- auricularia — the bilaterally symmetrical, ciliated larva of a holothurian.
- australasia — Australia, New Zealand, and neighbouring islands in the S Pacific Ocean
- australiana — objects or documents relating to Australia and its history or culture esp in the form of a collection
- austronesia — the islands of the central and S Pacific, including Indonesia, Melanesia, Micronesia, and Polynesia
- automobilia — items connected with cars and motoring of interest to the collector
- autotoxemia — autointoxication
- axanthopsia — a defect of vision in which the retina fails to respond to yellow.
- azoospermia — absence of spermatozoa in the semen
- bacchanalia — orgiastic rites associated with Bacchus
- bacillaemia — the presence of bacilli in the blood
- bacteraemia — the presence of bacteria in the blood
- bacteriemia — Bacteremia.
- bacteriuria — the presence of bacteria in the urine
- bagna cauda — a dip made from garlic, anchovies, butter, and olive oil, usually served hot over a spirit burner, with raw vegetables
- baking soda — Baking soda is the same as bicarbonate of soda.
- balistraria — (in a medieval fortification) an opening, usually in the form of a cross, through which a crossbow could be fired.
- bambocciata — a genre painting of usually small size produced in Rome in the 17th century.
- bar cocheba — Simon, died a.d. 135, Hebrew leader of insurrection against the Romans a.d. 132–135.
- barents sea — a part of the Arctic Ocean, bounded by Norway, Russia, and the islands of Novaya Zemlya, Spitsbergen, and Franz Josef Land
- baresthesia — the sense or perception of pressure.
- barra mansa — a city in Rio de Janeiro state, SE Brazil.
- barracudina — any of several slender, large-mouthed, pelagic fishes of the family Paralepididae.
- bathophobia — the fear of depths of any kind, whether a fear of deep water or of falling from a great height
- bibliomania — extreme fondness for books
- bibliotheca — a library or collection of books
- bikram yoga — a form of yoga in which traditional exercises are performed at high temperature and humidity
- binary data — binary file