10-letter words containing a, b, i, u
- belisarius — ?505–565 ad, Byzantine general under Justinian I. He recovered North Africa from the Vandals and Italy from the Ostrogoths and led forces against the Persians
- belorussia — historical region in central Europe corresponding to present-day Belarus
- betula oil — methyl salicylate.
- bhavabhuti — flourished 8th century, Indian dramatist.
- bi-lingual — able to speak two languages with the facility of a native speaker.
- biannually — occurring twice a year; semiannual.
- biannulate — having two bands, esp of colour
- bicapsular — (of plants) having two capsules or one capsule with two chambers
- bicornuate — Botany, Zoology. having two horns or hornlike parts.
- bicultural — having two cultures
- bifurcated — divided into two branches.
- big laurel — the rhododendron.
- big league — a major sports league
- big-league — Sports. of or belonging to a major league: a big-league pitcher.
- bigarreaux — a large, heart-shaped variety of sweet cherry, having firm flesh.
- bimaculate — marked with two spots.
- binoculars — Binoculars consist of two small telescopes joined together side by side, which you look through in order to look at things that are a long way away.
- binucleate — having two nuclei
- biobutanol — butyl alcohol.
- bipetalous — having two petals
- biquadrate — the fourth power
- bisulphate — a salt or ester of sulphuric acid containing the monovalent group -HSO4 or the ion HSO4–
- bivouacked — a military encampment made with tents or improvised shelters, usually without shelter or protection from enemy fire.
- blanquillo — any of several game fishes of the genus Caulolatilus, related to the tilefishes.
- blue daisy — a bushy, composite shrub, Felicia amelloides, of southern Africa, having solitary, daisylike flowers with yellow disks and blue rays, grown as an ornamental.
- blue giant — any of the large, bright stars having surface temperatures of about 20,000 K and diameters that are often ten times that of the sun.
- blue stain — a bluish discoloration of sapwood caused by growth of fungi
- boucicault — Dion (ˈdaɪɒn), real name Dionysius Lardner Boursiquot. 1822–90, Irish dramatist and actor. His plays include London Assurance (1841), The Octoroon (1859), and The Shaughran (1874)
- boulangism — the doctrines of militarism and reprisals against Germany, advocated, especially in the 1880s, by the French general Boulanger.
- boundaries — something that indicates bounds or limits; a limiting or bounding line.
- bowlingual — a device that allegedly translates a dog’s barks and grunts into a human language
- brain dump — (The act of telling someone) everything one knows about a particular topic. Typically used when someone is going to let a new party maintain a piece of code. Conceptually analogous to an operating system core dump in that it saves a lot of useful state before an exit. "You'll have to give me a brain dump on FOOBAR before you start your new job at HackerCorp." At Sun, this is also known as "TOI" (transfer of information).
- brazil nut — a tropical South American tree, Bertholletia excelsa, producing large globular capsules, each containing several closely packed triangular nuts: family Lecythidaceae
- breadfruit — Breadfruit are large round fruit that grow on trees in the Pacific Islands and in tropical parts of America and that, when baked, look and feel like bread.
- brian boru — ?941–1014, king of Ireland (1002–14): killed during the defeat of the Danes at the battle of Clontarf
- brugmansia — any of various solanaceous plants of the genus Brugmansia, native to tropical American regions and closely related to daturas, having sweetly scented flowers
- brunfelsia — any of various shrubs or small trees belonging to the genus Brunfelsia, of the nightshade family, native to tropical America, having white or purple tubular or bell-shaped flowers.
- buccinator — a thin muscle that compresses the cheeks and holds them against the teeth during chewing, etc
- buchmanism — the principles or the international movement of Moral Re-Armament or of the Oxford Group, or belief in or adherence to them.
- buckingham — a town in S central England, in Buckinghamshire; university (1975). Pop: 12 512 (2001)
- buckraking — the practice of accepting large sums of money for speaking to special interest groups.
- budgerigar — Budgerigars are small, brightly-coloured birds from Australia that people often keep as pets.
- buffaloing — any of several large wild oxen of the family Bovidae. Compare bison, Cape buffalo, water buffalo.
- bull chain — a chain for dragging logs to a sawmill.
- bumbailiff — (formerly) an officer employed to collect debts and arrest debtors for nonpayment
- buonarroti — Michelangelo.
- burglarize — If a building is burglarized, a thief enters it by force and steals things.
- burgundian — of or relating to Burgundy or its inhabitants
- burlingame — Anson [an-suh n] /ˈæn sən/ (Show IPA), 1820–70, U.S. diplomat.
- bursarship — a scholarship or grant awarded esp in Scottish and New Zealand schools, universities etc