13-letter words containing n, a, t, u
- autooxidation — autoxidation.
- autoresponder — A program that automatically generates a set response to all messages sent to a particular e-mail address.
- autumn crocus — a liliaceous plant, Colchicum autumnale, of Europe and N Africa having pink or purplish autumn flowers
- 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
- badminton cup — a long refreshing drink of claret with soda water and sugar
- banbury tarts — small baked pastries filled with raisins, currants, etc.
- band spectrum — a spectrum consisting of a number of bands of closely spaced lines that are associated with emission or absorption of radiation by molecules
- bang on about — If someone bangs on about something, they keep talking about it in a boring or annoying way.
- bank discount — interest on a loan deducted from the principal amount when the loan is made and based on the loan's face value
- bankrupt worm — a roundworm (genus Trichostrongylus) that is an intestinal parasite of birds and mammals, especially devastating to young livestock.
- barosinusitis — aerosinusitis.
- battlegrounds — Plural form of battleground.
- be nuts about — to be greatly in love with
- 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
- beacon status — a ranking awarded by the government to an organization, rendering it eligible for extra funding, and aimed at encouraging organizations to share good practice with each other
- beauteousness — The state or quality of being beauteous.
- 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.
- beleaguerment — a blockade or siege
- benefit fraud — the illegal activity of claiming benefit payments which a person is not entitled to
- benito juarez — Benito (Pablo) [be-nee-taw pah-vlaw] /bɛˈni tɔ ˈpɑ vlɔ/ (Show IPA), 1806–72, president of Mexico 1857–72.
- 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.
- bidenticulate — having two small teeth or toothlike processes.
- bioequivalent — the condition in which different formulations of the same drug or chemical are equally absorbed when taken into the body.
- birectangular — having two right angles.
- black country — a district in the English Midlands, around Birmingham: so called from the soot and grime produced by the many local industries.
- black currant — the small, round, blackish, edible fruit of a widely cultivated shrub, Ribes nigrum, of the saxifrage family.
- blaenau gwent — a county borough of SE Wales, created in 1996 from NW Gwent. Administrative centre: Ebbw Vale. Pop: 68 900 (2003 est). Area: 109 sq km (42 sq miles)
- blast furnace — A blast furnace is a large structure in which iron ore is heated under pressure so that it melts and the pure iron metal separates out and can be collected.
- boom-and-bust — characteristic of a period of economic prosperity followed by a depression.
- bouncy castle — A bouncy castle is a large object filled with air, often in the shape of a castle, which children play on at a fairground or other outdoor event.
- 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 truster — a member of a brain trust; an important but usually unofficial adviser.
- brandy butter — butter and sugar creamed together with brandy and served with Christmas pudding, etc
- brazen it out — to act in a bold way as if one need not be ashamed
- brilliant cut — a cut for gems
- brilliant-cut — a cut intended to enhance the brilliance of a gem with the least possible sacrifice of weight, characterized by a form resembling two pyramids set base to base, truncated so as to give a broad table and a very small culet, and having from 18 to 104 facets, 58 being typical.
- brittany blue — a medium greenish blue.
- brown mustard — black mustard. See under mustard (def 2).
- brutalization — to make brutal.
- buck sergeant — a newly promoted sergeant
- 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.
- bull elephant — an adult male elephant
- bums on seats — If the organizers of an event such as a concert want to put bums on seats, they want a lot of people to attend it.
- bundle sheath — a layer of cells in plant leaves and stems that surrounds a vascular bundle.
- buoyancy tank — an enclosed air-filled section of a boat, ship or hovercraft designed to keep it afloat and prevent it from sinking
- buoyant force — the law that a body immersed in a fluid is buoyed up by a force (buoyant force) equal to the weight of the fluid displaced by the body.
- burt standish — Burt L. pseudonym of Gilbert Patten.