15-letter words containing a, o, r, t, i, s
- transnationally — going beyond national boundaries or interests: a transnational economy.
- transplantation — to remove (a plant) from one place and plant it in another.
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- treaty of paris — a treaty of 1763 signed by Britain, France, and Spain that ended their involvement in the Seven Years' War
- 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°
- trout fisherman — a fisherman who catches trout
- trypanosomiasis — any infection caused by a trypanosome.
- turbinate bones — the thin scroll-shaped bones situated on the walls of the nasal passages
- turkish tobacco — a strongly aromatic tobacco, grown chiefly in Turkey and Greece, used in cigarettes.
- tutorial system — a system of education, especially in some colleges, in which instruction is given personally by tutors, who also act as general advisers of a small group of students in their charge.
- twist one's arm — to combine, as two or more strands or threads, by winding together; intertwine.
- ultra-modernist — very advanced in ideas, design, or techniques.
- ultra-religious — of, relating to, or concerned with religion: a religious holiday.
- ultrafastidious — extremely fastidious
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- ultramicroscopy — the use of the ultramicroscope.
- unconstrainable — unable to be confined
- unconstrainedly — in an unconfined manner
- uncontroversial — of, relating to, or characteristic of controversy, or prolonged public dispute, debate, or contention; polemical: a controversial book.
- undemonstrative — not given to open exhibition or expression of emotion, especially of affection.
- underestimation — to estimate at too low a value, rate, or the like.
- universal joint — piece that couples two rotating shafts
- universal motor — a series-wound motor, of one-half horsepower or less, using alternating or direct current.
- unprotestantize — to make something (e.g. a church, country, etc) a religion other than Protestant
- unseaworthiness — constructed, outfitted, manned, and in all respects fitted for a voyage at sea.
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- vacation course — a course of study undertaken during a vacation, usually combined with other activities
- vascularization — (of a tissue or embryo) to develop or extend blood vessels or other fluid-bearing vessels or ducts; become vascular.
- vasoconstrictor — a nerve or drug that causes vasoconstriction.
- vector analysis — the branch of calculus that deals with vectors and processes involving vectors.
- venus hairstone — a variety of rutilated quartz, used as a gemstone.
- vermouth cassis — a mixed drink made with dry vermouth, crème de cassis, soda or mineral water, and cracked ice.
- vicar apostolic — Roman Catholic Church. a titular bishop serving either in a district where no episcopal see has been established, or in one where the succession of bishops has been interrupted.
- vicar of christ — the pope, with reference to his claim to stand in the place of Jesus Christ and possess His authority in the church.
- victoria island — an island off the coast of N Canada, in the Arctic Ocean. 80,340 sq. mi. (208,081 sq. km).
- virginian stock — a similar and related North American plant, Malcolmia maritima
- virtual storage — a system whereby addressable memory is extended beyond main storage through the use of secondary storage managed by system software in such a way that programs can treat all of the designated storage as addressable main storage.
- vitreous silica — silica glass
- voyeuristically — of, relating to, or characteristic of a voyeur or of voyeurism.
- weather station — an installation equipped and used for meteorological observation.
- white cast iron — cast iron having most or all of its carbon in the form of cementite and exhibiting a silvery fracture.
- white snakeroot — a North American plant, Eupatorium urticaefolium, the roots or rhizomes of which have been used as a remedy for snakebite
- winter holidays — a period of rest from work or studies taken in winter
- wolverine state — Michigan (used as a nickname).
- worcester china — porcelain articles made in Worcester (England) from 1751 in a factory that became, in 1862, the Royal Worcester Porcelain Company
- working storage — the amount of memory used to temporarily store results or other data while a program is running.