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21-letter words containing h, o, l, d, n

  • law of thermodynamics — any of three principles variously stated in equivalent forms, being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done (first law of thermodynamics) the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work (second law of thermodynamics) and the principle that it is impossible to reduce the temperature of a system to absolute zero in a finite number of operations (third law of thermodynamics)
  • leave holding the bag — a container or receptacle of leather, plastic, cloth, paper, etc., capable of being closed at the mouth; pouch.
  • lost in the underflow — (jargon)   Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to "floating point underflow". The Hacker's Jargon File claimed that it is also a pun on "undertow" (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the path of a thrown baseball, but that effect gets lost in the underflow". Compare epsilon, epsilon squared; see also overflow bit.
  • maidenhair spleenwort — an evergreen fern, Asplenium trichomanes, abundant in woody areas of the North Temperate Zone, having thickly clustered fronds.
  • majority shareholding — a holding of more than half a company's shares
  • maryland yellowthroat — (in former systems of nomenclature) the common yellowthroat, Geothlypis trichas, especially the eastern U.S. subspecies.
  • mechanical solidarity — social cohesiveness that is based on shared activities, beliefs, and experiences and is characteristic of simple traditional societies.
  • metopon hydrochloride — a narcotic drug, C18H21O3N·HCl, derived from morphine, but slightly more potent: used in medicine to relieve pain
  • monochloroacetic acid — chloroacetic acid.
  • motherwell and wishaw — a burgh in the Motherwell district, in S Scotland.
  • northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
  • not hold one's breath — If you say that you won't hold your breath, you mean that you do not expect something to happen even though someone has suggested that it might.
  • old spanish practices — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
  • ortho-dichlorobenzene — a colorless liquid with a pleasant odor, C 6 H 4 Cl 2 , used as a solvent for a wide range of organic materials.
  • overhead-valve engine — I-head engine.
  • phenarsazine chloride — adamsite.
  • ploughman's spikenard — a European plant, Inula conyza, with tubular yellowish flower heads surrounded by purple bracts: family Asteraceae (composites)
  • propantheline bromide — a substance, C 2 3 H 3 0 BrNO 3 , used in the treatment of peptic ulcers.
  • purple-fringed orchid — either of two orchids, Habenaria fimbriata or H. psycodes, of eastern North America, having a cluster of fragrant purple flowers with a fringed lip.
  • purple-fringed orchis — either of two North American orchids (Habenaria psycodes and H. fimbriata) with purple-fringed flowers
  • rayleigh distribution — (mathematics)   A curve that yields a good approximation to the actual labour curves on software projects.
  • richard coeur de lion — ("Richard the Lion-Hearted"; "Richard Coeur de Lion") 1157–99, king of England 1189–99.
  • safe in the knowledge — If you do something safe in the knowledge that something else is the case, you do the first thing confidently because you are sure of the second thing.
  • school of hard knocks — the experience gained from living, especially from disappointment and hard work, regarded as a means of education: The only school he ever attended was the school of hard knocks.
  • school superintendent — an official whose job is to oversee school administration within a district
  • set the world on fire — the earth or globe, considered as a planet.
  • silicon tetrachloride — a colorless, fuming liquid, SiCl 4 , used chiefly for making smoke screens and various derivatives of silicon.
  • sovereign wealth fund — an investment fund created using the financial assets of a national government
  • spherical coordinates — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
  • sunday school teacher — someone who teaches at a Sunday school
  • the antipodes islands — a group of small uninhabited islands in the South Pacific, southeast of and belonging to New Zealand. Area: 62 sq km (24 sq miles)
  • the middle of nowhere — remote place
  • the moral high ground — If you say that someone has taken the moral high ground, you mean that they consider that their policies and actions are morally superior to the policies and actions of their rivals.
  • the oldest profession — prostitution
  • the slough of despond — a state of extreme despondency, depression or degradation
  • the women's land army — a unit of women recruited to do agricultural work in the United Kingdom during World War I and World War II
  • thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
  • to be hard luck on sb — to be unfortunate or unlucky for someone
  • to blow sth wide open — to expose something
  • to dig one's heels in — If you dig your heels in or dig in your heels, you refuse to do something such as change your opinions or plans, especially when someone is trying very hard to make you do so.
  • to fly off the handle — If you fly off the handle, you suddenly and completely lose your temper.
  • to let your hair down — If you let your hair down, you relax completely and enjoy yourself.
  • to live hand to mouth — If someone lives hand to mouth or lives from hand to mouth, they have hardly enough food or money to live on.
  • until the end of time — If you say that something will happen or be true until the end of time or to the end of time, you are emphasizing that it will always happen or always be true.
  • up hill and down dale — strenuously and persistently
  • weak head normal form — (reduction, theory)   (WHNF) A lambda expression is in weak head normal form (WHNF) if it is a head normal form (HNF) or any lambda abstraction. I.e. the top level is not a redex. The term was coined by Simon Peyton Jones to make explicit the difference between head normal form (HNF) and what graph reduction systems produce in practice. A lambda abstraction with a reducible body, e.g. \ x . ((\ y . y+x) 2) is in WHNF but not HNF. To reduce this expression to HNF would require reduction of the lambda body: (\ y . y+x) 2 --> 2+x Reduction to WHNF avoids the name capture problem with its need for alpha conversion of an inner lambda abstraction and so is preferred in practical graph reduction systems. The same principle is often used in strict languages such as Scheme to provide call-by-name evaluation by wrapping an expression in a lambda abstraction with no arguments: D = delay E = \ () . E The value of the expression is obtained by applying it to the empty argument list:
  • well-ordering theorem — the theorem of set theory that every set can be made a well-ordered set.
  • wholesale price index — an indicator of price changes in the wholesale market
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