18-letter words containing s, t, e, r, o
- up to one's tricks — If you say that someone is up to their tricks or up to their old tricks, you disapprove of them because they are behaving in the dishonest or deceitful way in which they typically behave.
- ur of the chaldees — the city where Abraham was born, sometimes identified with the Sumerian city of Ur. Gen. 11:28, 31; 15:7; Neh. 9:7.
- urban homesteading — homesteading (def 2).
- uriniferous tubule — a urine-bearing tubule in a nephron of a kidney.
- veterinary surgeon — Chiefly British. a veterinarian.
- video entry system — a security system whereby a person in a building can see someone who wants to gain access by means of a video image
- virginia snakeroot — any of various plants whose roots have been regarded as a remedy for snakebites, as the herb Aristolochia serpentaria (Virginia snakeroot) having a medicinal rhizome and rootlets, and the white-flowered Polygala senega (Seneca snakeroot) having a medicinal root.
- visiting professor — a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.
- voter registration — the requirement of citizens to become registered in order to vote
- wardrobe assistant — a person who assists the wardrobe mistress in a theatre
- warehouse capacity — the amount of storage space in a warehouse
- warrant of fitness — a six-monthly certificate required for motor vehicles certifying mechanical soundness
- watson-crick model — a widely accepted model for the three-dimensional structure of DNA, featuring a double-helix configuration for the molecule's two hydrogen-bonded complementary polynucleotide strands.
- weather forecaster — meteorologist
- web request broker — (web) (WRB) Part of Oracle Corporation's WebServer suite of programs. It is a high-performance, multi-threaded HTTP server which allows clients' requests to be directly translated into Oracle 7 database scripts, and automatically translates the results of the query back into HTML for delivery to the client browser.
- west-northwestward — moving, bearing, facing, or situated toward the west-northwest.
- west-southwestward — moving, bearing, facing, or situated toward the west-southwest.
- western alienation — a feeling of resentment by some inhabitants of western Canada against perceived favouritism by the national government towards the eastern provinces
- western isles pony — a breed of large pony, typically grey, with a dense waterproof coat. The only surviving variety is the Eriskay pony
- western meadowlark — any of several American songbirds of the genus Sturnella, of the family Icteridae, especially S. magna (eastern meadowlark) and S. neglecta (western meadowlark) having a brownish and black back and wings and a yellow breast, noted for their clear, tuneful song.
- westinghouse brake — a railroad air brake operated by compressed air.
- white iron pyrites — marcasite
- wireless telephone — Now Rare. radiotelephony.
- wireless telephony — Now Rare. radiotelephony.
- women at point sur — a narrative poem (1927) by Robinson Jeffers.
- women's liberation — a movement to combat sexual discrimination and to gain full legal, economic, vocational, educational, and social rights and opportunities for women, equal to those of men.
- wood-burning stove — cooker: fueled by wood
- work out the kinks — If someone works out the kinks in a situation, they resolve the problems associated with it.
- work-study student — a student who is permitted to work while studying, and use the money earned to pay for their studies
- working hypothesis — See under hypothesis (def 1).
- wrangell mountains — a mountain range in SE Alaska, extending into the Yukon, Canada. Highest peak: Mount Blackburn, 5037 m (16 523 ft)
- writ of assistance — a writ issued by a superior colonial court authorizing officers of the British crown to summon aid and enter and search any premises.
- x-ray spectrometer — a spectrometer using x-rays to activate the inner electrons of an atom in order to separate and identify the chemical constituents of a substance and their concentrations.
- x-ray spectrometry — the use of an x-ray spectrometer.
- yerkes observatory — an astronomical observatory located in Williams Bay, Wisconsin, affiliated with the University of Chicago, and having a 40-inch (102-cm) refracting telescope, the largest refractor in the world.
- young conservative — a member of the youth section of the United Kingdom Conservative Party
- zermelo set theory — (mathematics) A set theory with the following set of axioms: Extensionality: two sets are equal if and only if they have the same elements. Union: If U is a set, so is the union of all its elements. Pair-set: If a and b are sets, so is {a, b}. Foundation: Every set contains a set disjoint from itself. Comprehension (or Restriction): If P is a formula with one free variable and X a set then {x: x is in X and P(x)}. is a set. Infinity: There exists an infinite set. Power-set: If X is a set, so is its power set. Zermelo set theory avoids Russell's paradox by excluding sets of elements with arbitrary properties - the Comprehension axiom only allows a property to be used to select elements of an existing set.
- zone of saturation — the ground below the water table