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20-letter words containing s, r, f, l

  • red mercuric sulfide — a crystalline, water-insoluble, poisonous compound, HgS, occurring as a coarse, black powder (black mercuric sulfide) or as a fine, bright-scarlet powder (red mercuric sulfide) used chiefly as a pigment and as a source of the free metal.
  • reflecting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.
  • refracting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.
  • refuse disposal unit — a unit or part of a sink that disposes of waste food, etc, by grinding
  • republic of maldives — a republic occupying an archipelago of 1087 coral islands in the Indian Ocean, southwest of Sri Lanka: came under British protection in 1887; became independent in 1965 and a republic in 1968; member of the Commonwealth (1982–2016). The economy and infrastructure were severely damaged in the Indian Ocean tsunami of December 2004. Official language: Divehi. Official religion: (Sunni) Muslim. Currency: rufiyaa. Capital: Malé. Pop: 393 988 (2013 est). Area: 298 sq km (115 sq miles)
  • request for proposal — (programming)   (RFP) The publication by a prospective software purchaser of details of the required system in order to attract offers by software developers to supply it. Software development under contract starts with the selection of the software developer by the customer. A request for proposal (also called in Britain an "invitation to tender") is the beginning of the selection process.
  • royal air force list — an official list of all serving commissioned officers of the RAF and reserve officers liable for recall
  • sb's future lies swh — If you say that someone's future lies in a particular place or activity, you think they will be most successful or happy in that place or doing that activity.
  • second earl of essex — 2nd Earl of, Devereux, Robert.
  • self-differentiating — to form or mark differently from other such things; distinguish.
  • sergeant first class — a noncommissioned officer ranking next above a staff sergeant and below a first or master sergeant.
  • small craft advisory — a U.S. National Weather Service advisory of sustained winds, over coastal and inland waters, with speeds of 20–33 knots (23–38 mph, 10–17 m/sec). Regional NWS offices have discretion over the choice of the lower limit.
  • snowflake generation — the generation of people who became adults in the 2010s, viewed as being less resilient and more prone to taking offence than previous generations
  • snows of kilimanjaro — a short story (1936) by Ernest Hemingway.
  • sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
  • software methodology — (programming)   The study of how to navigate through each phase of the software process model (determining data, control, or uses hierarchies, partitioning functions, and allocating requirements) and how to represent phase products (structure charts, stimulus-response threads, and state transition diagrams).
  • solitary confinement — the confinement of a prisoner in a cell or other place in which he or she is completely isolated from others.
  • spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
  • split the difference — the state or relation of being different; dissimilarity: There is a great difference between the two.
  • spread like wildfire — If something, especially news or a rumour, spreads like wildfire, it spreads extremely quickly.
  • squirrel's-foot fern — ball fern.
  • strike off the rolls — to expel from membership
  • strong nuclear force — an interaction between elementary particles responsible for the forces between nucleons in the nucleus. It operates at distances less than about 10–15 metres, and is about a hundred times more powerful than the electromagnetic interaction
  • the legal profession — the profession of law
  • there is no call for — If you say that there is no call for someone to behave in a particular way, you are criticizing their behaviour, usually because you think it is rude.
  • theresa of avila, st — Saint. Also, Teresa. Also called Theresa of Avila [ah-vee-lah] /ˈɑ viˌlɑ/ (Show IPA), 1515–82, Spanish Carmelite nun, mystic, and writer.
  • thomas of erceldoune — Thomas of, Thomas of Erceldoune.
  • thorn in one's flesh — a sharp excrescence on a plant, especially a sharp-pointed aborted branch; spine; prickle.
  • to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
  • to fall on deaf ears — If a request falls on deaf ears or if the person to whom the request is made turns a deaf ear to it, they take no notice of it.
  • to flex your muscles — If a group, organization, or country flexes its muscles, it does something to impress or frighten people, in order to show them that it has power and is considering using it.
  • to flog a dead horse — If you say that someone is flogging a dead horse, you mean that they are trying to achieve something impossible.
  • treaty of versailles — the treaty of 1919 imposed upon Germany by the Allies (except for the US and the Soviet Union): the most important of the five peace treaties that concluded World War I
  • trumpet call for sth — a signal for something
  • unemployment figures — statistics relating to the number of people who are out of work
  • universal quantifier — a quantifier indicating that the sentential function within its scope is true for all values of any variable included in the quantifier.
  • upper yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park that is 436 m (1430 ft) high
  • van der waals forces — weak electrostatic forces between atoms and molecules caused by transient distortions in the distribution of electrons in the interacting atoms or molecules
  • viscount northcliffe — Viscount, Alfred Charles William Harmsworth.
  • warehouse facilities — places for storing goods
  • whole-life insurance — a type of insurance with a savings element that is guaranteed to pay out on death provided premiums have been paid as required by the policy
  • winsoft products ltd — (company)   The company which produces EMBLA Pro. E-mail: WinSoft Products Ltd <[email protected]>
  • with a grain of salt — to season with salt.
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