19-letter words containing a, y, u

reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
respiratory failure — a condition in which the respiratory system is unable to provide an adequate supply of oxygen or to remove carbon dioxide efficiently
reticulated tracery — tracery consisting in large part of a netlike arrangement of repeated geometrical figures.
rocky mountain goat — a long-haired, white, antelopelike wild goat, Oreamnos americanus, of mountainous regions of western North America, having short, black horns.
rural free delivery — former name for rural delivery service. Abbreviation: R.F.D.
safety-squeeze-play — Baseball. Also called suicide squeeze, suicide squeeze play. a play executed when there is a runner on third base and usually not more than one out, in which the runner starts for home as soon as the pitcher makes a motion to pitch, and the batter bunts. Also called safety squeeze, safety squeeze play. a similar play in which the runner on third base waits until the batter has successfully bunted before trying to score.
sea of tranquillity — Astronomy. Mare Tranquillitatis.
secondary education — education at high-school level
secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
secondary structure — the arrangement of a polypeptide into a regular alpha helix, beta structure, or random coil configuration by the formation of intramolecular hydrogen bonds along the length of the chain.
self-congratulatory — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
senatorial courtesy — the practice in the U.S. Senate of confirming only those presidential appointees approved by both senators from the state of the appointee, or by the senior senator of the president's party.
sequential analysis — the analysis of data obtained from a sample the size of which is not fixed in advance, but is selected based on the outcome of the sampling as it proceeds.
sexual stereotyping — the formation or promotion of a fixed general idea or image of how men and women will behave
simulation analysis — (language, simulation) (SIMAN) A simulation language, especially for manufacturing systems, developed by C. Dennis Pegden in 1983.
single life annuity — A single life annuity is an annuity where only one life is covered.
smokestack industry — A smokestack industry is a traditional industry such as heavy engineering or manufacturing, rather than a modern industry such as electronics.
social security act — a law passed in 1935 providing old-age retirement insurance, a federal-state program of unemployment compensation, and federal grants for state welfare programs.
stanford university — (education) A University in the city of Palo Alto, California, noted for work in computing, especially artificial intelligence. See SAIL.
stationery cupboard — a cupboard where things like paper, pens and paper clips are kept
strawberry geranium — a plant, Saxifraga stolonifera (or S. sarmentosa), of the saxifrage family, native to eastern Asia, that has rounded, variegated leaves and numerous threadlike stolons and is frequently cultivated as a houseplant.
supplementary angle — either of two angles that added together produce an angle of 180°.
supplementary story — follow-up (def 3b).
suspensory ligament — any of several tissues that suspend certain organs or parts of the body, especially the transparent, delicate web of fibrous tissue that supports the crystalline lens.
synchronous machine — an alternating-current machine in which the average speed of normal operation is exactly proportional to the frequency of the system to which it is connected.
tetrafluoroethylene — a colorless, water-insoluble, flammable gas, C 2 F 4 , used in the synthesis of certain polymeric resins, as Teflon.
the channel country — an area of E central Australia, in SW Queensland: crossed by intermittent rivers and subject to both flooding and long periods of drought
theory of equations — the branch of mathematics dealing with methods of finding the solutions to algebraic equations.
to bury the hatchet — If two people bury the hatchet, they become friendly again after a quarrel or disagreement.
to change your mind — If you change your mind, or if someone or something changes your mind, you change a decision you have made or an opinion that you had.
to change your tune — If you say that someone has changed their tune, you are criticizing them because they have changed their opinion or way of doing things.
to hold your breath — If you hold your breath, you make yourself stop breathing for a few moments, for example because you are under water.
to make your/a mark — If you make your mark or make a mark, you become noticed or famous by doing something impressive or unusual.
to rack your brains — If you rack your brains, you try very hard to think of something.
to turn a blind eye — If you say that someone is turning a blind eye to something bad or illegal that is happening, you mean that you think they are pretending not to notice that it is happening so that they will not have to do anything about it.
triangle inequality — the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
turn a blind eye to — to pretend not to notice or ignore deliberately
ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
unconstitutionality — not constitutional; unauthorized by or inconsistent with the constitution, as of a country.
united presbyterian — a member of the United Presbyterian Church of North America, founded in Pittsburgh in 1858 by a union of two Presbyterian groups.
university entrance — an examination taken by pupils of postprimary schools
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
unlimited liability — liability that is not restricted to any unpaid portion of nominal capital invested in a business
valencian community — region comprising three provinces of E Spain: 8,998 sq mi (23,305 sq km); pop. 4,029,000; cap. Valencia
vapor recovery unit — A vapor recovery unit is a system for recovering vapors from inside sealed crude oil or condensate tanks, with a scrubber (= a device for removing unwanted substances) and compressor (= a device that raises pressure).
velocity modulation — the modulation in velocity of a beam of electrons or ions caused by passing the beam through a high-frequency electric field, as in a cavity resonator
visual display unit — video display terminal. Abbreviation: VDU.
volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
welsh mountain pony — a small sturdy but graceful breed of pony used mostly for riding, originally from Wales

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