13-letter words containing a, b, i, n
- bartholinitis — Inflammation of Bartholin's cyst.
- basal ganglia — the thalamus together with other closely related masses of grey matter, situated near the base of the brain
- baseline cost — the projected cost for an undertaking at the time it is budgeted
- basic english — a simplified form of English, proposed by C. K. Ogden and I. A. Richards, containing a vocabulary of approximately 850 of the commonest English words, intended as an international language
- basic fortran — (language) A subset of Fortran.
- basket dinner — a group social gathering, as of church members, to which participants contribute casseroles or other dishes to share.
- basking shark — a very large plankton-eating shark, Cetorhinus maximus, often floating at the sea surface: family Cetorhinidae
- bass clarinet — a clarinet with the lowest range, in the octave below the B-flat clarinet
- bass-baritone — a singer or voice in the bass range with baritone qualities
- bassenthwaite — a lake in NW England, in Cumbria near Keswick. Length: 6 km (4 miles)
- bastard eigne — the first-born illegitimate son of parents whose second son was legitimate.
- batan islands — a group of islands in the Philippines, north of Luzon. Capital: Basco. Pop: 16 467 (2000). Area: 197 sq km (76 sq miles)
- bathylimnetic — (of an organism) living in the depths of lakes and marshes
- baton twirler — someone who twirls a baton, esp a drum major or majorette
- batrachotoxin — a steroidal alkaloid, C31H42N2O6, found in the skin of certain Neotropical frogs (genus Phyllobates) and used on poison arrows: one of the most powerful natural neurotoxins known
- battering ram — A battering ram is a long heavy piece of wood that is used to knock down the locked doors of buildings.
- battering-ram — an ancient military device with a heavy horizontal ram for battering down walls, gates, etc.
- batting order — the sequence in which hitters will bat in a given game, determined in advance by the team manager.
- bazillionaire — (humorous) An incredibly rich person.
- bcg (vaccine) — a vaccine prepared from an attenuated strain of the tubercle bacillus, used for immunization against tuberculosis
- be hard going — If you say that something is hard going, you mean it is difficult and requires a lot of effort.
- be upstanding — (in a court of law) a direction to all persons present to rise to their feet before the judge enters or leaves the court
- beaking joint — a straight joint made by several members, as strips of flooring, ending at the same line.
- beanbag chair — a chair like a large beanbag covered with vinyl, fabric, etc. and filled with foam pellets, as of polystyrene, that shift about to fit one's body
- bearing plate — a heavy metal plate for receiving and distributing concentrated weight, as from a column or one end of a truss.
- bearing sword — a large sword carried for its owner by a squire or servant because of its size.
- beatification — a beatifying or being beatified
- beautifulness — having beauty; possessing qualities that give great pleasure or satisfaction to see, hear, think about, etc.; delighting the senses or mind: a beautiful dress; a beautiful speech.
- bedding plane — the surface separating two successive layers of stratified rock
- bedding plant — A bedding plant is a plant which lasts for one year. It is put in a flower bed before it flowers, and is then removed when it has finished flowering.
- bedding-plant — bedmaker (def 1).
- beetlebrained — stupid
- belgian congo — former Belgian colony (1908-60) in central Africa: now the country of Democratic Republic of the Congo
- bellefontaine — a city in W Ohio.
- belly landing — the landing of an aircraft on its fuselage without use of its landing gear
- benedictional — a book of benedictions or blessings
- beneficential — relating to beneficence
- beneficiary's — a person or group that receives benefits, profits, or advantages.
- beneficiation — the procedure of reducing ores
- benefit fraud — the illegal activity of claiming benefit payments which a person is not entitled to
- benefit match — a sports match organized to raise money for charity, or for a particular player
- bengal quince — bael.
- benito juarez — Benito (Pablo) [be-nee-taw pah-vlaw] /bɛˈni tɔ ˈpɑ vlɔ/ (Show IPA), 1806–72, president of Mexico 1857–72.
- benjamin west — Benjamin, 1738–1820, U.S. painter, in England after 1763.
- benjamin-bush — Also called spice-wood. a yellow-flowered, North American shrub, Lindera benzoin, of the laurel family, whose bark and leaves have a spicy odor.
- benthopelagic — relating to species living at the bottom of the sea
- benzimidazole — a crystalline growth-inhibiting compound
- bergamot mint — an aromatic herb, Mentha piperita citrata, having a lemonlike odor when crushed.
- bering strait — a strait between Alaska and Russia, connecting the Bering Sea and the Arctic Ocean
- berkeleianism — the philosophical system of George Berkeley, holding that objects exist only when perceived, that God's perception sustains the universe, and that there is no independent substratum or substance in which these perceptions inhere