9-letter words containing i, o, t, a, s
- testation — witness or evidence
- thallious — having a surplus of thallium
- theodosia — a female given name: from a Greek word meaning “god-given.”.
- thio salt — a salt of a thio acid.
- thomasina — a female given name.
- timisoara — a city in W Romania.
- timor sea — an arm of the Indian Ocean, between Timor and NW Australia.
- toad spit — cuckoo spit (sense 1)
- toamasina — a port in E Madagascar, on the Indian Ocean: the country's chief commercial centre. Pop: 198 000 (2005 est)
- tocantins — a river in E Brazil, flowing N to the Pará River. 1700 miles (2735 km) long.
- togavirus — a virus belonging to the Togaviridae family and which usually affects birds and mammals rather than humans
- tokushima — a seaport on NE Shikoku, in SW Japan.
- tommasini — Vicenzo [vee-chen-dzaw] /viˈtʃɛn dzɔ/ (Show IPA), 1880–1950, Italian composer.
- tonsillar — a prominent oval mass of lymphoid tissue on each side of the throat.
- tonsorial — of or relating to a barber or barbering: the tonsorial shop.
- torsional — the act of twisting.
- toscanini — Arturo [ahr-too r-oh;; Italian ahr-too-raw] /ɑrˈtʊər oʊ;; Italian ɑrˈtu rɔ/ (Show IPA), 1867–1957, Italian orchestra conductor, in the U.S. after 1928.
- tovarisch — comrade (used as a term of address in the Soviet Union).
- toyohashi — a seaport on S Honshu, in central Japan.
- transonic — close to the speed of propagation of sound; moving at 700–780 miles per hour (1127–1255 km/h) at sea level.
- trasimeno — a lake in central Italy, in Umbria near Perugia: Romans defeated by Hannibal 217 b.c. About 50 sq. mi. (130 sq. km).
- triclosan — a drug used to treat skin infections
- trifocals — glasses with trifocal lenses
- trigamous — of or relating to trigamy or a trigamist.
- trisagion — an ancient hymn
- tsakonian — a modern Greek dialect spoken on the east coast of the Peloponnesus, descended from the Laconian dialect of ancient Sparta.
- tsavorite — a green variety of grossularite, found in Kenya in 1975 and used as a gem.
- vasotocin — a chemical similar to oxytocin found in birds, fish, and some amphibians
- vasotonic — pertaining to or regulating the tone of the blood vessels.
- vexatious — causing vexation; troublesome; annoying: a vexatious situation.
- videocast — a television broadcast of the video only.
- visitator — an official visitor
- vistadome — dome (def 7).
- vitaceous — belonging to the Vitaceae, the grape family of plants.
- vitascope — one of the first motion-picture projectors, developed by Thomas Edison.
- volcanist — a person who studies volcanoes
- wainscots — Plural form of wainscot.
- waistcoat — Chiefly British. vest (def 1).
- waypoints — Plural form of waypoint.
- wild oats — any uncultivated species of Avena, especially a common weedy grass, A. fatua, resembling the cultivated oat.
- xanthosis — (pathology) A yellowish discolouration of tissues undergoing degeneration.
- zákinthos — one of the southernmost islands of the Ionian Islands, Greece: 155 sq mi (401 sq km)
- zoiatrics — the science of veterinary surgery