15-letter words containing h, a, r
- topographic map — a map showing topographic features, usually by means of contour lines.
- torture chamber — a room where somebody is caused extreme physical pain, esp in order to extract information, break resistance, etc
- towers of hanoi — (games) A classic computer science problem, invented by Edouard Lucas in 1883, often used as an example of recursion. "In the great temple at Benares, says he, beneath the dome which marks the centre of the world, rests a brass plate in which are fixed three diamond needles, each a cubit high and as thick as the body of a bee. On one of these needles, at the creation, God placed sixty-four discs of pure gold, the largest disc resting on the brass plate, and the others getting smaller and smaller up to the top one. This is the Tower of Bramah. Day and night unceasingly the priests transfer the discs from one diamond needle to another according to the fixed and immutable laws of Bramah, which require that the priest on duty must not move more than one disc at a time and that he must place this disc on a needle so that there is no smaller disc below it. When the sixty-four discs shall have been thus transferred from the needle on which at the creation God placed them to one of the other needles, tower, temple, and Brahmins alike will crumble into dust, and with a thunderclap the world will vanish." The recursive solution is: Solve for n-1 discs recursively, then move the remaining largest disc to the free needle. Note that there is also a non-recursive solution: On odd-numbered moves, move the smallest sized disk clockwise. On even-numbered moves, make the single other move which is possible.
- track athletics — sporting activities, such as relay running or sprinting, which take place on a running track
- training scheme — a scheme for teaching people skills in a particular field or profession
- training school — a school that provides training in some art, profession, or vocation.
- training wheels — a pair of small wheels attached one on each side of the rear wheel of a bicycle for stability while one is learning to ride.
- trainspotterish — obsessed with trivial details, esp of a subject generally considered uninteresting
- trans-euphrates — a river in SW Asia, flowing from E Turkey through Syria and Iraq, joining the Tigris to form the Shatt-al-Arab near the Persian Gulf. 1700 miles (2735 km) long.
- trans-himalayan — the, a mountain range extending about 1500 miles (2400 km) along the border between India and Tibet. Highest peak, Mt. Everest, 29,028 feet (8848 meters).
- transhistorical — occurring throughout all human history
- transverse arch — a supporting arch or rib that runs across a vault from side to side, dividing the bays.
- travel brochure — a brochure, often from a travel agency, which advertises holidays, hotels, etc
- tree-and-branch — denoting a cable television system in which all available programme channels are fed to each subscriber
- tribromoethanol — a white, crystalline powder, C 2 H 3 Br 3 O, used as a basal anesthetic.
- trichloroacetic — as in trichloroacetic acid
- trichloroethane — a volatile nonflammable colourless liquid with low toxicity used for cleaning electrical apparatus and as a solvent; 1,2,3-trichloroethane. Formula: CH3CCl3
- trichomonacidal — relating to a trichomonacide
- trickle charger — a small mains-operated battery charger, esp one that delivers less than 5 amperes and is used by car owners
- tristram shandy — a novel (1759–67) by Laurence Sterne.
- trithionic acid — a thionic acid, H2S3O6
- trochlear nerve — either one of the fourth pair of cranial nerves, consisting of motor fibers that innervate the superior oblique muscle of the upper part of the eyeball.
- trout fisherman — a fisherman who catches trout
- truth-value gap — the possibility in certain semantic systems of a statement being neither true nor false while also not being determinately of any third truth-value, as all my children are asleep uttered by a childless person
- tsushima strait — a channel between the Tsushima islands and Kyushu island, connecting the Sea of Japan and the East China Sea: sometimes considered part of the Korea Strait. About 60 miles (97 km) long; 40 miles (64 km) wide.
- turkish tobacco — a strongly aromatic tobacco, grown chiefly in Turkey and Greece, used in cigarettes.
- turn the scales — to determine or decide something uncertain
- turn the tables — an article of furniture consisting of a flat, slablike top supported on one or more legs or other supports: a kitchen table; an operating table; a pool table.
- twitching trail — a logging road sufficiently developed to allow the hauling of logs along it by horse or tractor.
- typographically — of or relating to typography.
- ultramarathoner — a person who takes part in an ultramarathon
- ultramicrofiche — ultrafiche.
- ultrasonography — a diagnostic imaging technique utilizing reflected high-frequency sound waves to delineate, measure, or examine internal body structures or organs.
- unapprehensible — not able to be understood or comprehended
- unauthoritative — having due authority; having the sanction or weight of authority: an authoritative opinion.
- uncharacterized — to mark or distinguish as a characteristic; be a characteristic of: Rich metaphors characterize his poetry.
- unchoreographed — not choreographed; not pre-arranged or pre-prepared; unplanned
- unchristianlike — not like a Christian; not in accordance with Christian teaching and values
- unchronological — arranged in the order of time: a chronological list of events.
- uncopyrightable — not able to be copyrighted
- under one's hat — a shaped covering for the head, usually with a crown and brim, especially for wear outdoors.
- under the table — of, relating to, or for use on a table: a table lamp.
- under-the-table — transacted in secret or in an underhanded manner.
- underhandedness — underhand.
- underresearched — diligent and systematic inquiry or investigation into a subject in order to discover or revise facts, theories, applications, etc.: recent research in medicine.
- universal chuck — a chuck, as on a lathe headstock, having three stepped jaws moving simultaneously for precise centering of a workpiece of any of a wide range of sizes.
- unnatural death — death resulting from an external cause, such as intentional injury (such as homicide or suicide) or unintentional injury (in an accident)
- unrehabilitated — to restore to a condition of good health, ability to work, or the like.
- unseaworthiness — constructed, outfitted, manned, and in all respects fitted for a voyage at sea.
- urquhart castle — a castle near Drumnadrochit in Highland, Scotland: situated on Loch Ness