20-letter words containing s, t, a, u, o, r

schrodinger equation — the wave equation of nonrelativistic quantum mechanics. Also called Schrödinger wave equation. Compare wave equation (def 2).
secure accommodation — an institution where young offenders are kept in custody
secure sockets layer — (networking, security) (SSL) A protocol designed by Netscape Communications Corporation to provide secure communications over the Internet using asymmetric key encryption. SSL is layered beneath application protocols such as HTTP, SMTP, Telnet, FTP, Gopher and NNTP and is layered above the connection protocol TCP/IP. It is used by the HTTPS access method.
security association — (networking) The relationship between two or more entities (typically, a computer, but could be a user on a computer, or software component) which describes how the entities will use security services, such as encryption, to communicate. See RFC 1825.
semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
shareholders' equity — Shareholders' equity is the total amount of ownership investment in a company.
shoulder-length hair — hair that reaches a person's shoulders
social security card — a card that contains details of a person's social security number
sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
sodium meta-arsenite — sodium arsenite.
south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.
south orkney islands — an uninhabited group of islands in the S Atlantic, southeast of Cape Horn: formerly a dependency of the Falkland Islands; part of the British Antarctic Territory since 1962 (claims are suspended under the Antarctic Treaty). Area: 621 sq km (240 sq miles)
south temperate zone — the part of the earth's surface between the tropic of Capricorn and the Antarctic Circle.
southern oscillation — a low-latitude fluctuation of atmospheric pressure closely linked with El Niño events, specifically the periods of El Niño warming and La Niña cooling.
special patrol group — a former police unit tasked with counter terrorism in the Royal Ulster Constabulary
spontaneous abortion — miscarriage (def 1).
spontaneous recovery — the reappearance of a response after its extinction has been followed by a period of rest
spontaneous-abortion — Also called voluntary abortion. the removal of an embryo or fetus from the uterus in order to end a pregnancy.
square cross-section — If a kelly has a square cross-section, it has a surface area with four equal sides, when looked at as if has been sliced through.
square of opposition — a diagrammatic representation of the opposition of categorical propositions.
squatter sovereignty — (used contemptuously by its opponents) popular sovereignty (def 2).
standard book number — International Standard Book Number. Abbreviation: SBN.
state enrolled nurse — a nurse with training and examinations enabling him or her to perform many nursing services
states of the church — Papal States
straight-cut tobacco — tobacco that is cut in such a way that it will lie flat.
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
structural isomerism — Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism) as CH 3 OCH 3 and CH 3 CH 2 OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
subscription library — a commercial lending library
summary jurisdiction — the right a court has to adjudicate immediately upon some matter arising during its proceedings
supersonic transport — a commercial jet airplane that can fly faster than the speed of sound. Abbreviation: SST.
surveillance society — a society where surveillance technology is widely used to monitor people's everyday activities
synchronous rotation — rotation of a satellite in which the period of rotation is equal to the period of orbit around its primary, leaving the same face always pointing toward the primary: The moon is in synchronous rotation about the earth.
systemic circulation — the circulatory system in general.
the course of nature — the ordinary course of events
the founding fathers — any of the men who were members of the U.S. Constituional Convention of 1787
thomas of erceldoune — Thomas of, Thomas of Erceldoune.
thought transference — transference of thought by extrasensory means from the mind of one individual to another; telepathy.
three-quarter nelson — a hold in which a wrestler, from a kneeling position behind a prone opponent, applies a half nelson with one arm, passes the other arm under the opponent's body on the near side, and locks the arms at the fingers or wrist on the back of the opponent's neck.
throw up one's hands — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
to disturb the peace — If someone is accused of disturbing the peace, they are accused of behaving in a noisy and offensive way in public.
to do your damnedest — If you say that you will do your damnedest to achieve something, you mean that you will try as hard as you can to do it, even though you think that it will take a lot of effort.
to get your bearings — to find out where one is or to find out what one should do next
to spread your wings — If you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience.
to stand your ground — If you stand your ground or hold your ground, you continue to support a particular argument or to have a particular opinion when other people are opposing you or trying to make you change your mind.
to waste your breath — If someone says you are wasting your breath, they mean that the person you are talking to will not take any notice and so there is no point saying anything to them.
to wear the trousers — If one person in a couple, especially the woman, wears the pants, or in British English wears the trousers, they are the one who makes all the decisions.
to work your way swh — If you work your way somewhere, you move or progress there slowly, and with a lot of effort or work.
tobacco mosaic virus — a retrovirus causing mosaic disease in members of the nightshade family. Abbreviation: TMV.
toothbrush moustache — a short narrow moustache, resembling the filaments of a toothbrush

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