19-letter words containing h, e, y, n

superhigh frequency — any frequency between 3000 and 30,000 megahertz. Abbreviation: SHF.
sympathetic contact — behavior toward an individual based on the individual's personal makeup rather than on his or her group membership.
synchromesh gearbox — A synchromesh gearbox is a usually manually operated transmission in which a change of gears takes place between gears that are already revolving at the same speed.
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.
synthetic detergent — any synthetic substance, other than soap, that is an effective cleanser and functions equally well as a surface-active agent in hard or soft water.
take sth personally — If you take someone's remarks personally, you are upset because you think that they are criticizing you in particular.
telephone directory — a book, directory, or the like, usually containing an alphabetical list of telephone subscribers in a city or other area, together with their addresses and telephone numbers.
tetrachloroethylene — a colorless, nonflammable, nonexplosive liquid, C 2 Cl 4 , used as a solvent, especially in dry cleaning.
tetrafluoroethylene — a colorless, water-insoluble, flammable gas, C 2 F 4 , used in the synthesis of certain polymeric resins, as Teflon.
tetramethyldiarsine — an oily slightly water-soluble poisonous liquid with garlic-like odour. Its derivatives are used as accelerators for rubber
the bitter/very end — If you do something to the bitter end or to the very end, you continue to do it for as long as you can, although it may be very unpleasant or dangerous.
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
the eroica symphony — Symphony No. 3 in E flat major by Ludwig van Beethoven
the eye of the wind — the direction from which the wind is blowing
the high and mighty — people who are considered very important
the london assembly — the devolved legislature of London, based in City Hall, Southwark
the open university — (in Britain) a university founded in 1969 for mature students studying by television and radio lectures, correspondence courses, local counselling, and summer schools
the world of cryton — (TWOC) A BBS for the Acorn Archimedes. Telephone: +44 (1749) 670 030 (24hrs, most speeds).
theory of equations — the branch of mathematics dealing with methods of finding the solutions to algebraic equations.
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 do the drying-up — to dry dishes, cups, glasses, etc after they have been washed
to hang by a thread — If you say that something is hanging by a thread, you mean that it is in a very uncertain state and is unlikely to survive or succeed.
to hold your tongue — If you hold your tongue, you do not say anything even though you might want to or be expected to, because it is the wrong time to say it.
to lay down the law — If you say that someone lays down the law, you are critical of them because they give other people orders and they think that they are always right.
trickle-down theory — an economic theory that monetary benefits directed especially by the government to big business will in turn pass down to and profit smaller businesses and the general public.
trumpet honeysuckle — an American honeysuckle, Lonicera sempervirens, having spikes of large, tubular flowers, deep-red outside and yellow within.
turn of the century — point when one century becomes another
ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
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
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.
velocity microphone — a microphone in which the output varies according to the instantaneous velocity of the air molecules in the incident sound waves.
very high frequency — any frequency between 30 and 300 megahertz. Abbreviation: VHF.
vinylidene chloride — a colorless, volatile, flammable liquid, C 2 H 2 Cl, that is copolymerized chiefly with vinyl chloride to form saran.
wearable technology — a small computer or advanced electronic device that is worn or carried on the body: the trendiest wearable technologies.
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
whorfian hypothesis — Sapir-Whorf hypothesis.
with your eyes open — If you say that you did something with your eyes open or with your eyes wide open, you mean that you knew about the problems and difficulties that you were likely to have.
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.
yellowtail kingfish — a large carangid game fish, Seriola grandis, of S Australian waters
yeoman of the guard — a member of the bodyguard of the English sovereign, instituted in 1485, which now consists of 100 men, including officers, having purely ceremonial duties.
your hands are tied — If you say that your hands are tied, you mean that something is preventing you from acting in the way that you want to.
yourdon methodology — (programming) The software engineering methodology developed by Edward Yourdon and colleagues in the 1970s and 1980s. "Yourdon methodology" is a generic term for all of the following methodologies: Yourdon/Demarco, Yourdon/Constantine, Coad/Yourdon.

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