20-letter words containing a, v, i

regenerative furnace — a furnace in which the incoming air is heated by regenerators.
regional development — aid-giving to poorer areas or countries
relative atomic mass — the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12
relative conjunction — a conjunction that introduces a relative clause
relative deprivation — the perception of an unfair disparity between one's situation and that of others.
relative probability — a measure or estimate of the degree of confidence one may have in the occurrence of an event, defined as the limit of the proportion observed in a sample as the sample size tends to infinity
reminder advertising — a type of advertising designed to remind customers that an existing or well-known product is still available and for sale
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)
reservations manager — A reservations manager at a hotel is responsible for the reservations at the hotel.
restrictive covenant — a covenant with a clause that restricts the action of any party to it, especially an agreement among property owners not to sell to members of particular minority groups.
restrictive practice — Restrictive practices are ways in which people involved in an industry, trade, or profession protect their own interests, rather than having a system which is fair to the public, employers, and other workers.
return of the native — a novel (1878) by Thomas Hardy.
reversionary annuity — an annuity payable to a beneficiary during the period of time he or she survives the insured.
romantic involvement — the condition of being in a romantic or sexual relationship
sales representative — a person or organization designated by a company to solicit business on its behalf in a specified territory or foreign country: I suggest you contact our Chicago sales representative.
satellite navigation — navigation using data received from satellites
satellite television — television transmitted from an artificial satellite at a power suitable for direct reception in the home
sensitivity training — a form of group therapy designed to develop understanding of oneself and others through free, unstructured discussion.
serve a person right — to pay a person back, esp for wrongful or foolish treatment or behaviour
service access point — (networking) (SAP) The OSI term for the component of a network address which identifies the individual application on a host which is sending or receiving a packet. Different SAPs distinguish between different services or applications on a host, e.g. electronic mail, FTP, HTTP.
seven against thebes — (used with a plural verb) Classical Mythology. seven heroes, Amphiaraus, Capaneus, Eteoclus, Hippomedon, Parthenopaeus, Polynices, and Tydeus, who led an expedition against Thebes to depose Eteocles in favor of his brother Polynices: the expedition failed, but the Epigoni, the sons of the Seven against Thebes, conquered the city ten years later.
shank of the evening — the latter part of the afternoon
shifting cultivation — a land-use system, esp in tropical Africa, in which a tract of land is cultivated until its fertility diminishes, when it is abandoned until this is restored naturally
shivah asar betammuz — a Jewish fast day observed on the 17th day of Tammuz in memory of the breach of the walls of Jerusalem by the Romans in a.d. 70.
slow-scan television — a technique or system in which an image is scanned electronically more slowly than is normally done in order to produce images, especially of still pictures, that can be transmitted economically, as over a telephone line, and displayed on a television screen.
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.
societal development — the formation and transformation of social life, customs, institutions, etc.
special boat service — a unit of the Royal Marines specializing in reconnaissance and sabotage
squatter sovereignty — (used contemptuously by its opponents) popular sovereignty (def 2).
state representative — a person elected by a state to be a member of the House of Representatives
subjective idea-list — a doctrine that the world has no existence independent of sensations or ideas.
suitland-silver hill — a city in central Maryland, near Washington, D.C.
summative assessment — general assessment of a pupil's achievements over a range of subjects by means of a combined appraisal of formative assessments
surface-active agent — any substance that when dissolved in water or an aqueous solution reduces its surface tension or the interfacial tension between it and another liquid.
surveillance society — a society where surveillance technology is widely used to monitor people's everyday activities
talavera de la reina — a city in central Spain, on the Tagus River: British and Spanish defeat of the French 1809.
television broadcast — sth shown on tv
television programme — a programme broadcast on television
theory of relativity — relativity (def 2).
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.
thermal conductivity — the amount of heat per unit time per unit area that can be conducted through a plate of unit thickness of a given material, the faces of the plate differing by one unit of temperature.
to have it in for sb — If someone has it in for you, they do not like you and they want to make life difficult for you.
to live and let live — You say live and let live as a way of saying that you should let other people behave in the way that they want to and not criticize them for behaving differently from you.
to sb's disadvantage — If something is to your disadvantage or works to your disadvantage, it creates difficulties for you.
tobacco mosaic virus — a retrovirus causing mosaic disease in members of the nightshade family. Abbreviation: TMV.
track-laying vehicle — A track-laying vehicle is a vehicle whose wheels run inside a continuous chain or track.
trailing vortex drag — drag arising from vortices that occur behind a body moving through a gas or liquid
travel-sickness pill — a pill which is used to relieve the symptoms of travel or motion sickness, the condition of being nauseated from riding in a moving vehicle
travelling-wave tube — an electronic tube in which an electron beam interacts with a distributed high-frequency magnetic field so that energy is transferred from the beam to the field
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

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