13-letter words containing t, a, i, s, u
- south georgia — a British island in the S Atlantic, about 800 miles (1290 km) SE of the Falkland Islands. About 1000 sq. mi. (2590 sq. km).
- south nahanni — a river in the SW Northwest Territories, Canada, flowing SE from near the Yukon border to the Liard River. 336 miles (540 km) long.
- south ossetia — a region in N Georgia, on the S side of the Caucasus Range. 1506 sq. mi. (3900 sq. km).
- south vietnam — a former country in SE Asia that comprised Vietnam S of about 17° N latitude; a separate state 1954–75; now part of reunified Vietnam. Capital: Saigon.
- soviet russia — a conventional name of the Soviet Union.
- space tourism — travel into space for recreational purposes
- spathiphyllum — any of various tropical plants of the genus Spathiphyllum, having a white or green spathe and a spike of fragrant flowers and often cultivated as an ornamental.
- speaking tube — a tube for conveying the voice over a somewhat limited distance, as from one part of a building or ship to another.
- speculatively — pertaining to, of the nature of, or characterized by speculation, contemplation, conjecture, or abstract reasoning: a speculative approach.
- spenta mainyu — the good and creative spirit that is the offspring of Ahura Mazda.
- spermatangium — the organ that produces spermatia in red algae.
- spring beauty — any American spring plant belonging to the genus Claytonia, of the purslane family, especially C. virginica, having an elongated cluster of white flowers tinged with pink.
- square matrix — a matrix in which the number of rows is equal to the number of columns.
- squeezability — the quality of being capable of, or suitable for, being squeezed
- st. augustine — Saint, a.d. 354–430, one of the Latin fathers in the early Christian Church; author; bishop of Hippo in N Africa.
- st. eustatius — an island in the Netherlands Antilles, in the E West Indies. 7 sq. mi. (18 sq. km).
- stalactitious — containing stalactites
- staminiferous — bearing or having a stamen or stamens.
- stand up with — to act as a wedding attendant to
- standing jump — a jump performed from a stationary position without a run-up
- station house — a police station or fire station.
- status indian — a member of any of the numerous indigenous groups registered as Indians under the federal Indian Act, having special rights and privileges and usually living on a reservation.
- steam turbine — a turbine driven by steam pressure.
- stercorarious — stercoraceous
- sterculia gum — karaya gum.
- stimulability — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- stirrup pants — close-fitting pants with a stirruplike strap, at the end of each leg, to be positioned under the arch of the foot
- straighten up — stand straighter
- strangulation — Pathology, Surgery. to compress or constrict (a duct, intestine, vessel, etc.) so as to prevent circulation or suppress function.
- stratum title — a system of registered ownership of space in multistorey buildings, to be equivalent to the ownership of the land of a single-storey building
- strobilaceous — resembling a strobilus; conelike.
- structuralism — any theory that embodies structural principles.
- structuralist — any theory that embodies structural principles.
- structuralize — to form into or make part of a structure.
- structuration — the act of giving structure to something
- sub-political — of, relating to, or concerned with politics: political writers.
- suballocation — an allocation made from a previous allocation
- subastringent — slightly astringent.
- subcategorize — to split into subcategories
- subcollegiate — of, relating to, or characteristic of subcollege students or a subcollege
- subdelegation — a group or body of delegates: Our club sent a delegation to the rally.
- subderivative — a word derived from a derivative.
- subepithelial — any animal tissue that covers a surface, or lines a cavity or the like, and that, in addition, performs any of various secretory, transporting, or regulatory functions.
- subequatorial — of, relating to, or being a region near the equatorial region.
- subgeneration — a generation within another generation
- subindication — the act or process of subindicating
- subindicative — of or relating to subindicating
- sublieutenant — British. a navy officer ranking next below a lieutenant.
- subliterature — writing below the standards of literature as an art form.
- subordination — the act of placing in a lower rank or position: The refusal to allow women to be educated was part of society's subordination of women to men.