15-letter words containing a, n, d, r, o, i
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- terminator seed — a seed that produces sterile plants, used in some genetically modified crops so that a new supply of seeds has to be bought every year
- the daily round — the usual activities of one's day
- the perigordian — the Perigordian culture
- thiocarbanilide — a gray powder, C 13 H 12 N 2 S, used as an intermediate in dyes and as an accelerator in vulcanization.
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- thought reading — mind reading.
- three of a kind — a set of three cards of the same denomination.
- tirso de molina — Luis [loo-ees] /luˈis/ (Show IPA), 1535–1600, Spanish Jesuit theologian.
- to bear in mind — If you tell someone to bear something in mind or to keep something in mind, you are reminding or warning them about something important which they should remember.
- to make friends — If you make friends with someone, you begin a friendship with them. You can also say that two people make friends.
- trading account — an account similar to a traditional bank account, holding cash and securities, and administered by an investment dealer
- trading company — a company that is owned by the people who have bought shares in that company
- trading profits — profits made from the buying and selling of goods and services
- training ground — an area where people prepare for sporting competitions, with activities primarily concentrating on skills and fitness
- trans-jordanian — of or relating to the former Trans-Jordan (now Jordan) or its inhabitants
- transfer window — the period during the year in which a football club can transfer players from other teams into their own
- trial and error — experimentation or investigation in which various methods or means are tried and faulty ones eliminated in order to find the correct solution or to achieve the desired result or effect.
- trichomonacidal — relating to a trichomonacide
- trithionic acid — a thionic acid, H2S3O6
- trojan asteroid — one of a number of asteroids that have the same mean motion and orbit as Jupiter, preceding or following the planet by a longitude of 60°
- truman doctrine — the policy of President Truman, as advocated in his address to Congress on March 12, 1947, to provide military and economic aid to Greece and Turkey and, by extension, to any country threatened by Communism or any totalitarian ideology.
- turnaround time — the total time taken between the submission of a program for execution and the return of the complete output to the customer
- ultra-modernist — very advanced in ideas, design, or techniques.
- un-considerable — rather large or great in size, distance, extent, etc.: It cost a considerable amount. We took a considerable length of time to decide.
- un-romanticized — to make romantic; invest with a romantic character: Many people romanticize the role of an editor.
- unaffordability — that can be afforded; believed to be within one's financial means: attractive new cars at affordable prices.
- unconstrainedly — in an unconfined manner
- undemonstrative — not given to open exhibition or expression of emotion, especially of affection.
- under-education — to educate too little or poorly.
- underestimation — to estimate at too low a value, rate, or the like.
- underpopulation — having a population lower than is normal or desirable.
- unearned income — income received from property, as interest, dividends, or the like.
- unextraordinary — beyond what is usual, ordinary, regular, or established: extraordinary costs.
- unindoctrinated — to instruct in a doctrine, principle, ideology, etc., especially to imbue with a specific partisan or biased belief or point of view.
- universal donor — a person with blood of group O.
- unskilled labor — work that requires practically no training or experience for its adequate or competent performance.
- untraditionally — in an untraditional fashion; not traditionally
- uranium dioxide — a black, crystalline compound, UO 2 , insoluble in water, used in nuclear fuel rods, in ceramics, and pigments.
- uropygial gland — a gland opening on the back at the base of the tail in most birds that secretes an oily fluid used by the bird in preening its feathers.
- vector addition — the process of finding one vector that is equivalent to the result of the successive application of two or more given vectors.
- victoria island — an island off the coast of N Canada, in the Arctic Ocean. 80,340 sq. mi. (208,081 sq. km).
- voronoi diagram — (mathematics, graphics) (Or "Voronoi tessellation", "Voronoi decomposition", "Dirichlet tessellation", After Georgy Feodosevich Voronoy) For a set S of points in a Euclidean space, the partition Vor(S) of the plane into the voronoi polygons associated with the members of S, where each polygon is defined by the set of points nearer to some given point in S than to any other point in S. The Voronoi diagram is the dual of the Delaunay triangulation of S.
- w.h. richardson — Henry Handel (Henrietta Richardson Robertson) 1870–1946, Australian novelist.
- weatherboarding — an early type of board used as a siding for a building.
- weekend warrior — a reservist who attends weekend meetings of his or her unit in order to fulfill military obligations.
- wheelchairbound — Confined to a wheelchair.
- wilderness road — a 300-mile (500-km) route from eastern Virginia through the Cumberland Gap into Kentucky, explored by Daniel Boone in 1769 and marked as a trail by him and other pioneers in 1775: a major route for early settlers moving west.
- windfall profit — a profit that arises thanks to an external event over which the person profiting had no control
- winter holidays — a period of rest from work or studies taken in winter