17-letter words containing p, r, i, v
- radiative capture — the capture of a particle, as a neutron, by a nucleus, inducing the emission of electromagnetic radiation, as a gamma ray.
- recovery position — a position in which an unconscious person can be lain on the floor, which minimises them from further risk
- reflexive pronoun — A reflexive pronoun is a pronoun such as 'myself' which refers back to the subject of a sentence or clause. For example, in the sentence 'He made himself a cup of tea', the reflexive pronoun 'himself' refers back to 'he'.
- relative aperture — the ratio of the diameter of a lens, especially a camera lens, to the focal length; the reciprocal of the f number or focal ratio of the lens.
- relative pathname — (file system) A path relative to the working directory. Its first character can be anything but the pathname separator.
- reproductive cell — gamete.
- reverse apartheid — a perceived bias against White people following the end of Apartheid
- reza shah pahlavi — Muhammad Riza (or Reza) [ri-zah] /rɪˈzɑ/ (Show IPA), 1919–80, shah of Iran 1941–79; in exile after 1979 (son of Riza Shah Pahlavi).
- riza shah pahlavi — Pahlavi (def 2).
- self-preservation — preservation of oneself from harm or destruction.
- sensitivity group — a group of persons participating in sensitivity training.
- sleep deprivation — a condition in which you have not had enough sleep
- sodium-vapor lamp — an electric lamp in which sodium vapor is activated by current passing between two electrodes, producing a yellow, glareless light: used on streets and highways.
- spanish civil war — the civil war in Spain 1936–39.
- special privilege — exclusive advantage
- spiral bevel gear — a bevel gear having curved teeth tending to converge on the axis of rotation.
- subjective spirit — spirit, insofar as it falls short of the attainments of objective spirit.
- superconductivity — the phenomenon of almost perfect conductivity shown by certain substances at temperatures approaching absolute zero. The recent discovery of materials that are superconductive at temperatures hundreds of degrees above absolute zero raises the possibility of revolutionary developments in the production and transmission of electrical energy.
- supermassive star — Astronomy. a star with a mass more than fifty times the mass of the sun.
- supervision order — an order by a juvenile court requiring a named probation officer or local-authority social worker to advise, assist, and befriend a child or young person who is the subject of care proceedings, over a period of up to three years
- supervisory board — a board of management of which nonmanagerial workers are members, having supervisory powers over some aspects of management decision-making
- telephone service — a company or public utility that provides a telephone-operating service
- thought-provoking — If something such as a book or a film is thought-provoking, it contains interesting ideas that make people think seriously.
- travelling people — Gypsies or other itinerant people: a term used esp by such people of themselves
- twelve patriarchs — any of the sons of Jacob ((the twelve patriarchs),) from whom the tribes of Israel were descended.
- uncooperativeness — working or acting together willingly for a common purpose or benefit.
- upper yukon river — Lewes River.
- vacuum aspiration — menstrual extraction.
- varix lymphaticus — a similar condition affecting an artery or lymphatic vessel
- ventura publisher — Corel VENTURA
- vermiform process — vermiform appendix.
- vertical planning — the planning of education delivered in schools discussed between teachers of different classes or grades
- vice-presidential — relating to a person who ranks immediately below the chief executive or head of state of a republic
- video disk player — a device that reads the information on a video disc
- visually impaired — (of a person) having reduced vision so severe as to constitute a handicap.
- vittore carpaccio — Vittore [veet-taw-re] /vitˈtɔ rɛ/ (Show IPA), c1450–1525, Venetian painter.
- vulcan death grip — (jargon) A variant of Vulcan nerve pinch derived from a Star Trek classic epsisode where a non-existant "Vulcan death grip" was used to fool Romulans that Spock had killed Kirk.
- waiver of premium — a provision in a policy establishing specific conditions under which the policy will be kept in force without the policyholder's being required to continue to pay premiums.
- weeping lovegrass — any grass of the genus Eragrostis, as E. curvula (weeping lovegrass) and E. trichodes (sand lovegrass) cultivated as forage and ground cover.
- wood preservative — a coating applied to timber as a protection against decay, insects, weather, etc