15-letter words containing t, i, o, u
- bituminous coal — a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 107 – 3.63 × 107 J/kg
- black guillemot — a common guillemot, Cepphus grylle: its summer plumage is black with white wing patches and its winter plumage white with greyish wings
- black mountains — a mountain range running from N Monmouthshire and SE Powys (Wales) to SW Herefordshire (England). Highest peak: Waun Fach, 811 m (2660 ft)
- bloodguiltiness — guilty of murder or bloodshed.
- bodily function — A person's bodily functions are the normal physical processes that regularly occur in their body, particularly the ability to urinate and defecate.
- bone conduction — the transmission of sound vibrations to the internal ear through the cranial bones (opposed to air conduction).
- booster cushion — an extra seat or cushion placed on an existing seat for a child to sit on in a car
- borscht circuit — summer resort hotels in the Catskills and White Mountains, where entertainment is provided for the guests
- botulinum toxin — a pharmaceutical formulation of botulin used in minute doses to treat various forms of muscle spasm and for the cosmetic removal of wrinkles
- bouillotte lamp — a table lamp of the 18th century, having two or three adjustable candle brackets and a common shade sliding on a central shaft.
- bourbon biscuit — a rich chocolate-flavoured biscuit with a chocolate-cream filling
- boustrophedonic — of or relating to lines written in opposite directions
- bowstring truss — a structural truss consisting of a curved top chord meeting a bottom chord at each end.
- boys' night out — an evening spent outside of the home by a group of men
- branchiostegous — branchiostegal.
- british council — an organization founded (1934) to extend the influence of British culture and education throughout the world
- bronchial tubes — the bronchi or their smaller divisions
- buffer solution — a solution to which a salt of a weak acid or base has been added
- bulldog edition — the early edition of a morning newspaper, chiefly for out-of-town distribution
- bun in the oven — in the womb
- buy-back option — the option for a company to buy some or all of its shares from an investor, who acquired them by putting venture capital into the company when it was formed
- calcium oxalate — a white, crystalline powder, CaC 2 O 4 , insoluble in water, used in making oxalic acid.
- calydonian hunt — the pursuit by Meleager, Atalanta, and others of a savage boar (Calydonian boar) sent by Artemis to lay waste to Calydon.
- campaign button — a disk-shaped pin worn by a supporter of a political candidate, usually bearing the name of the candidate and often a slogan or the candidate's picture.
- capital account — A country's capital account is the part of its balance of payments that is concerned with the movement of capital.
- capitulationism — advocacy or approval of capitulation.
- capitulationist — advocacy or approval of capitulation.
- cartesian doubt — willful suspension of all interpretations of experience that are not absolutely certain: used as a method of deriving, by elimination of such uncertainties, axioms upon which to base theories.
- cat-o'-mountain — catamountain
- catholic church — any of several Churches claiming to have maintained continuity with the ancient and undivided Church
- cauliflowerette — a single floret from the head of a cauliflower.
- cause of action — the facts alleged in a complaint, upon which is based the plaintiff's right to a legal remedy in a court of law
- caustic alcohol — sodium ethylate.
- cell disruption — Cell disruption is when a biological material becomes smaller to release proteins and enzymes.
- centrifugal box — a revolving chamber, used in the spinning of manufactured filaments, in which the plastic fibers, subjected to centrifugal force, are slightly twisted and emerge in the form of yarn wound into the shape of a hollow cylinder.
- chartophylacium — (in a medieval church) a place for the keeping of records and documents.
- child abduction — the crime of removing a child from its rightful home
- chromium-plated — having been plated with chromium
- circularisation — Alternative spelling of circularization.
- circularization — to circulate (a letter, memorandum, etc.).
- circumlocutions — Plural form of circumlocution.
- circumlocutious — Circumlocutional.
- circumnavigator — A person who circumnavigates; that is, sails around the world.
- circumscription — the act of circumscribing or the state of being circumscribed
- circumvallation — surrounded by or as if by a rampart.
- circumvolutions — Plural form of circumvolution.
- city councilman — a member of a city council
- ciudad trujillo — former name (1936–61) of Santo Domingo.
- ciudad victoria — a city in E central Mexico, capital of Tamaulipas state. Pop: 285 000 (2005 est)
- claustrophobics — Plural form of claustrophobic.