19-letter words containing s, i, l, o
- trusteeship council — a United Nations body that supervises the government of a territory by a foreign country
- tussock caterpillar — the larva of a tussock moth.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- ultrasonic cleaning — the use of ultrasound to vibrate a piece to be cleaned while the piece is immersed in a cleaning fluid. The process produces a very high degree of cleanliness, and is used for jewellery and ornately shaped items
- unconstitutionality — not constitutional; unauthorized by or inconsistent with the constitution, as of a country.
- under police escort — If you go somewhere or are taken somewhere under police escort, you go there accompanied by a police escort.
- under the spotlight — If someone or something comes under the spotlight, they are thoroughly examined, especially by journalists and the public.
- university hospital — a hospital that is affiliated with a university. University hospitals provide clinical education and training to future and current doctors, nurses, and other health professionals, in addition to delivering medical care to patients
- unlawful possession — possession of substances or items (such as drugs or guns) for which criminal sanctions exist because they may not be legally possessed or may not be possessed under certain circumstances
- vacuum distillation — a process of distillation employing a vacuum that by lowering the pressure on a liquid allows volatilization at a lower temperature than normal.
- vaginal intercourse — intercourse involving insertion of the penis into the vagina
- valley of the kings — a valley on the west bank of the Nile near the site of Thebes: the necropolis of many of the kings and queens of the 18th and 19th dynasties of ancient Egypt, c1350–c1200 b.c.
- venus of willendorf — a village in NE Austria, near Krems: site of an Aurignacian settlement where a 4½ inches (11 cm) limestone statuette (Venus of Willendorf) was found.
- verdigris toadstool — a basidiomycetous fungus, Stropharia aeruginosa, having a distinctive and unusual blue-green cap and paler shaggy stem
- vicariate apostolic — a district under the jurisdiction of a vicar apostolic.
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- vulvovaginal glands — the small gland on either side of the lower part of the vagina
- wage-push inflation — an inflationary trend caused by wage increases that in turn cause rises in production costs and prices.
- wandering albatross — a large albatross, Diomedea exulans, of southern waters, having the plumage mostly white with dark markings on the upper parts.
- waste disposal unit — an electrically operated fitment in the plughole of a kitchen sink that breaks up food refuse so that it goes down the waste pipe
- welsh mountain pony — a small sturdy but graceful breed of pony used mostly for riding, originally from Wales
- wesleyan methodists — a branch of the Methodist Church in its original form
- western yellow pine — ponderosa pine.
- whorled loosestrife — any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usually yellow flowers, as L. vulgaris (garden loosestrife) or L. quadrifolia (whorled loosestrife)
- wireless local loop — (communications) (WLL, radio in the loop, RITL, fixed-radio access, FRA) Connecting subscribers to the public switched telephone network (PSTN) using radio signals instead of copper wires. The wireless link may be all or part of the connection between the subscriber and the switch. WLL includes cordless access systems, proprietary fixed radio access and fixed cellular systems.
- with flying colours — If you pass a test with flying colours, you have done very well in the test.
- with the gloves off — (of a dispute, argument, etc) conducted mercilessly and in earnest, with no reservations
- withdrawal symptoms — When someone has withdrawal symptoms, they feel ill after they have stopped taking a drug which they were addicted to.
- withdrawal syndrome — a spectrum of physical and behavioral symptoms following cessation from the continuous use of an addictive drug, the character and severity of the symptoms depending upon the particular drug and the daily dose.
- world heritage site — a natural or manmade area or structure which is recognized as being of international importance and therefore deserving special protection
- xenotransplantation — xenograft.
- yablonovy mountains — a mountain range in Siberia. Highest peak: 1680 m (5512 ft)
- yellowtail kingfish — a large carangid game fish, Seriola grandis, of S Australian waters