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21-letter words containing a, s, e, r, t, i

  • sherman antitrust act — an act of Congress (1890) prohibiting any contract, conspiracy, or combination of business interests in restraint of foreign or interstate trade.
  • short message service — (messaging)   (SMS) A message service offered by the GSM digital mobile telephone system. Using SMS, a short alphanumeric message (160 alphanumeric characters) can be sent to a mobile phone to be displayed there, much like in an alphanumeric pager system. The message is buffered by the GSM network until the phone becomes active.
  • sierra madre oriental — the system of mountains in the east of Mexico
  • sieve of eratosthenes — a method of obtaining prime numbers by sifting out the composite numbers from the set of natural numbers so that only prime numbers remain.
  • signal-to-noise ratio — the ratio of one parameter, such as power of a wanted signal to the same parameter of the noise at a specified point in an electronic circuit, etc
  • silicon tetrachloride — a colorless, fuming liquid, SiCl 4 , used chiefly for making smoke screens and various derivatives of silicon.
  • silicon tetrafluoride — a colorless, fuming gas, SiF 4 , used chiefly in the manufacture of fluosilicic acid.
  • simple actor language — (language)   (SAL) A minimal actor language, used for teaching in:
  • sing a different tune — a succession of musical sounds forming an air or melody, with or without the harmony accompanying it.
  • single parent benefit — a form of government funded financial assistance paid to single parents
  • single spanish burton — a tackle having a runner as well as the fall supporting the load, giving a mechanical advantage of three, neglecting friction.
  • sinusoidal projection — an equal-area projection in which parallels are straight lines spaced at regular intervals, the central meridian is a straight line one-half the length of the equator, and the other meridians are curves symmetrical to the central meridian.
  • skew symmetric matrix — a matrix that is equal to the negation of its transpose
  • slatwall merchandiser — A slatwall merchandiser is a three-dimensional display unit with grooves cut into its surface into which metal hanging rails can be fixed at various heights.
  • snap one's fingers at — any of the terminal members of the hand, especially one other than the thumb.
  • social inquiry report — (in Britain) a report on a person and his or her circumstances, which may be required by a court before sentencing and is made by a probation officer or a social worker from a local authority social services department
  • somatization disorder — a mental illness, usually beginning before age 20, characterized by multiple physical complaints for which no physical causes can be found and often leading to unnecessary treatment or surgery and to severe disability.
  • somatotrophic-hormone — a hormone secreted by the anterior pituitary gland, that stimulates growth in humans.
  • south pacific current — an ocean current that flows E in the South Pacific Ocean parallel to the Antarctic Circumpolar Current.
  • sovereign wealth fund — an investment fund created using the financial assets of a national government
  • space shuttle orbiter — orbiter (def 1).
  • spark ignition engine — A spark ignition engine is an engine running on the Otto cycle.
  • special correspondent — a journalist who covers stories firsthand from a war zone
  • special court-martial — a court-martial established to try violations of military law less serious than those tried by a general court-martial but more serious than those tried by a summary court-martial.
  • 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.
  • spin angular momentum — to make (yarn) by drawing out, twisting, and winding fibers: Pioneer women spun yarn on spinning wheels.
  • splice the main brace — to join together or unite (two ropes or parts of a rope) by the interweaving of strands.
  • split-finger fastball — a type of fastball that sinks abruptly as it nears home plate, thrown with the grip used for a forkball
  • split-screen facility — a facility allowing different scenes to be shown on screen at the same time
  • stabilization-process — the act or process of stabilizing or the state of being stabilized.
  • staffordshire terrier — former name of American Staffordshire terrier.
  • stare one in the face — to be glaringly obvious or imminent
  • stations of the cross — a series of 14 crosses, often accompanied by 14 pictures or carvings, arranged in order around the walls of a church, to commemorate 14 supposed stages in Christ's journey to Calvary
  • statistical inference — the theory, methods, and practice of forming judgments about the parameters of a population, usually on the basis of random sampling
  • statutory declaration — a declaration made under statutory authority before a justice of the peace or commissioner for oaths which may in certain cases be substituted for a statement on oath
  • steady state universe — a universe described by the steady state theory.
  • stem-and-leaf diagram — a histogram in which the data points falling within each class interval are listed in order
  • stick in one's throat — to be difficult, or against one's conscience, for one to accept, utter, or believe
  • stock list department — (in an American stock exchange) the department dealing with monitoring compliance with its listing requirements and rules
  • stop loss reinsurance — Stop loss reinsurance is a form of reinsurance under which the reinsurer pays the cedant's losses in any year over a particular percentage of the earned premium.
  • strachey, christopher — Christopher Strachey
  • strategic air command — a U.S. Air Force command charged with intercontinental air strikes, especially nuclear attacks.
  • student participation — the extent to which students participate or involve themselves in a class, course, etc
  • subliminal perception — perception of or reaction to a stimulus that occurs without awareness or consciousness
  • substitution reaction — the replacement of an atom or group of atoms in a compound by another atom or group.
  • suction and curettage — a technique involving extraction of the fetus through a suction tube, used to perform abortions during the early stages of pregnancy.
  • sun protection factor — SPF.
  • supergranulation cell — one of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 miles (16,000–32,000 km) and lasting longer than a day.
  • supplementary benefit — (formerly) an extra amount of money that is paid to someone by the government, in addition to their normal income. Replaced by income support in 1988
  • surface acoustic wave — an acoustic wave generated on the surface of a piezoelectric substrate: used as a filter in electronic circuits
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