13-letter words containing o, u, a, n, i
- 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.
- 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.
- 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.
- boardinghouse — a private house in which accommodation and meals are provided for paying guests
- 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
- bosman ruling — an EU ruling that allows out-of-contract footballers to leave their clubs without the clubs receiving a transfer fee
- 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.
- 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.
- 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.
- 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.
- buffalo wings — spicy fried segments of chicken wings, usually served with celery sticks and a sauce of blue cheese
- burial ground — A burial ground is a place where bodies are buried, especially an ancient place.
- businesswoman — A businesswoman is a woman who works in business.
- butanoic acid — kind of acid
- by reputation — If you know someone by reputation, you have never met them but you have heard of their reputation.
- calculational — relating to calculation
- capaciousness — capable of holding much; spacious or roomy: a capacious storage bin.
- capitulations — Plural form of capitulation.
- capsulization — The act or process of capsulizing.
- carbon tissue — a sheet of paper coated with pigmented gelatine, used in the carbon process
- carbon-tissue — paper faced with a preparation of carbon or other material, used between two sheets of plain paper in order to reproduce on the lower sheet that which is written or typed on the upper.
- carboniferous — yielding coal or carbon
- carbonium ion — type of positively charged organic ion
- carburization — Impregnation or reaction with carbon, especially in the manufacture of steel.
- carcinomatous — a malignant and invasive epithelial tumor that spreads by metastasis and often recurs after excision; cancer.
- caribou inuit — a member of any of the Inuit peoples who formerly inhabited the Barren Lands of N Canada
- carillonneurs — Plural form of carillonneur.
- carnivorously — In a carnivorous manner.