13-letter words containing u, n, a, r, o
- arteriovenous — of, relating to, or affecting an artery and a vein
- articulations — Plural form of articulation.
- arundinaceous — resembling a reed
- astronautical — of or relating to astronautics or astronauts.
- atomic number — the number of protons in the nucleus of an atom of an element
- atrociousness — The state of being atrocious.
- attributional — of or relating to the act of attributing
- auctioneering — Present participle of auctioneer.
- audience room — a room for holding formal interviews or hearings.
- aum shinrikyo — a syncretistic Japanese cult combining elements of Buddhism, Hinduism, and Christianity, founded by Shoko Asahara in 1986; responsible for a number of murders and in particular a nerve-gas attack on the Tokyo underground in 1995
- authenticator — a person or thing that authenticates.
- authorisation — Alternative spelling of authorization.
- authoritarian — If you describe a person or an organization as authoritarian, you are critical of them controlling everything rather than letting people decide things for themselves.
- authorization — an authorizing or being authorized
- auto-injector — An auto-injector is a hypodermic syringe that you can use to inject yourself with a liquid.
- 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
- backgrounders — Plural form of backgrounder.
- backgrounding — Present participle of background.
- backing group — a group of musicians providing an instrumental or vocal accompaniment for a pop singer
- banking hours — the hours during which a bank is open for business
- bankrupt worm — a roundworm (genus Trichostrongylus) that is an intestinal parasite of birds and mammals, especially devastating to young livestock.
- barbarousness — The state or quality of being barbarous.
- baroque organ — a pipe organ dating from or built to the specifications of the baroque period at the time of J. S. Bach.
- barosinusitis — aerosinusitis.
- baryon number — the number of baryons in a system minus the number of antibaryons
- battlegrounds — Plural form of battleground.
- 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.
- bildungsroman — a novel concerned with a person's formative years and development
- black country — a district in the English Midlands, around Birmingham: so called from the soot and grime produced by the many local industries.
- boardinghouse — a private house in which accommodation and meals are provided for paying guests
- bonded labour — a system in which a person provides labour in order to pay off debts
- 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
- bounce around — to spring back from a surface in a lively manner: The ball bounced off the wall.
- boundary line — a line marking one of the edges of a playing area
- boundary peak — a peak in SW Nevada, in the White Mountains, near the California border: highest elevation in Nevada. 13,143 feet (4006 meters).
- boundary scan — The use of scan registers to capture state from device input and output pins. IEEE Standard 1149.1-1990 describes the international standard implementation (sometimes called JTAG after the Joint Test Action Group which began the standardisation work).
- bouquet garni — A bouquet garni is a bunch of herbs that are tied together and used in cooking to add flavour to the food.
- bourdon gauge — a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases the tube tends to straighten and the pointer indicates the applied pressure
- brain surgeon — a surgeon who specializes in brain surgery
- brass foundry — a foundry that makes things from brass
- 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.
- brown mustard — black mustard. See under mustard (def 2).
- brutalization — to make brutal.