13-letter words containing u, n, i, o
- averruncation — the act of averting or turning away
- aviation fuel — fuel used to power airplanes
- back mutation — the reversion of a mutant to the original phenotype
- backgrounding — Present participle of background.
- backing group — a group of musicians providing an instrumental or vocal accompaniment for a pop singer
- badminton cup — a long refreshing drink of claret with soda water and sugar
- bank discount — interest on a loan deducted from the principal amount when the loan is made and based on the loan's face value
- bank of issue — a bank, as a Federal Reserve Bank, empowered by a government to issue currency.
- banking hours — the hours during which a bank is open for business
- banking house — a more formal term for a bank
- barosinusitis — aerosinusitis.
- beef bouillon — a broth made either by straining water in which bits of lean beef have been cooked or by dissolving beef extract in hot water.
- beehive round — an artillery shell that ejects thousands of naillike metal projectiles on exploding.
- benito juarez — Benito (Pablo) [be-nee-taw pah-vlaw] /bɛˈni tɔ ˈpɑ vlɔ/ (Show IPA), 1806–72, president of Mexico 1857–72.
- bermuda onion — a large white or yellow onion with a mild flavor, grown in Texas, California, etc.
- bernoulli box — (storage) A high capacity storage device, Iomega Corporation's first popular product, that spins a mylar disk over a read-write head using the Bernoulli principle.
- beta function — a function of two variables, usually expressed as an improper integral and equal to the quotient of the product of the values of the gamma function at each variable divided by the value of the gamma function at the sum of the variables.
- beta globulin — a blood plasma protein that is separable from other globulins by electrophoresis.
- bignoniaceous — of, relating to, or belonging to the Bignoniaceae, a chiefly tropical family of trees, shrubs, and lianas, including jacaranda, bignonia, and catalpa
- bildungsroman — a novel concerned with a person's formative years and development
- bioequivalent — the condition in which different formulations of the same drug or chemical are equally absorbed when taken into the body.
- bird dismount — Hecht1 (def 1).
- blood pudding — Blood pudding is another word for black pudding.
- bloodcurdling — terrifying; horrifying
- blow moulding — a process for moulding single-piece plastic objects in which a thermoplastic is extruded into a split mould and blown against its sides
- boardinghouse — a private house in which accommodation and meals are provided for paying guests
- bodily injury — The bodily injury section of a liability insurance policy usually covers hospital bills for the injured parties as well as related expenses such as rehabilitation, medicines, and lost income.
- body building — the act or practice of exercising, lifting weights, etc., so as to develop the muscles of the body.
- boite de nuit — boîte.
- bone-crushing — powerful or constricting enough to crush one's bones: a bone-crushing handshake.
- boraginaceous — of, relating to, or belonging to the Boraginaceae, a family of temperate and tropical typically hairy-leaved flowering plants that includes forget-me-not, lungwort, borage, comfrey, and heliotrope
- boris godunov — Boris Fedorovich [bawr-is fi-dawr-uh-vich,, bohr-,, bor-;; Russian buh-ryees fyaw-duh-ruh-vyich] /ˈbɔr ɪs fɪˈdɔr ə vɪtʃ,, ˈboʊr-,, ˈbɒr-;; Russian bʌˈryis ˈfyɔ də rə vyɪtʃ/ (Show IPA), 1552–1605, regent of Russia 1584–98 and czar 1598–1605.
- bosman ruling — an EU ruling that allows out-of-contract footballers to leave their clubs without the clubs receiving a transfer fee
- bottom-unique — In domain theory, a function f is bottom-unique if f x = bottom <=> x = bottom A bottom-unique function is also strict.
- boudoir grand — a domestic grand piano between 5 and 6 feet in length
- bougainvillea — Bougainvillea is a climbing plant that has thin, red or purple flowers and grows mainly in hot countries.
- bouillon cube — A bouillon cube is a solid cube made from dried meat or vegetable juices and other flavorings. Bouillon cubes are used to add flavor to dishes such as stews and soups.
- bouncing bomb — a bomb used by the RAF in World War II, designed to bounce along water
- bound up with — closely or inextricably linked with
- boundary line — a line marking one of the edges of a playing area
- bouquet garni — A bouquet garni is a bunch of herbs that are tied together and used in cooking to add flavour to the food.
- bourguignonne — Burgundy (def 5).
- brain surgeon — a surgeon who specializes in brain surgery
- brassfounding — the practice of making things from brass
- brazen it out — to act in a bold way as if one need not be ashamed
- brigham young — Andrew (Jackson, Jr.) born 1932, U.S. clergyman, civil-rights leader, politician, and diplomat: mayor of Atlanta, Georgia, 1981–89.
- brownie guide — a member of the Brownie Guides, one of the junior branches (aged 7–10 years) in The Guide Association
- brutalization — to make brutal.
- bud variation — any variation in a bud due to changes in either its genetic composition or environment or both such that the resulting flower, fruit, or shoot differs from others of the same plant or species.
- bufadienolide — any of a family of steroid lactones, occurring in toad venom and squill, that possess cardiac-stimulating and antitumor activity.