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18-letter words containing s, e, r, o, l, g

  • percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
  • percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
  • personal bodyguard — a person employed to protect a particular person
  • personal organizer — a small notebook with sections for personal information, as dates and addresses.
  • physical geography — the branch of geography concerned with natural features and phenomena of the earth's surface, as landforms, drainage features, climates, soils, and vegetation.
  • pilgrim's progress — an allegory (1678) by John Bunyan.
  • plains grasshopper — a large, destructive short-horned grasshopper, Brachystola magna, of the western U.S., marked by pinkish hind wings.
  • plight one's troth — to make a promise of marriage
  • population figures — population totals; statistics relating to the size of populations
  • positively charged — having a positive charge
  • postal storage car — a railroad car for transporting unsorted mail.
  • postmaster general — the executive head of the postal system of a country.
  • precedence lossage — /pre's*-dens los'*j/ A misunderstanding of operator precedence resulting in unintended grouping of arithmetic or logical operators when coding an expression. Used especially of mistakes in C code due to the nonintuitively low precedence of "&", "|", "^", "<<" and ">>". For example, the following C expression, intended to test the least significant bit of x, x & 1 == 0 is parsed as x & (1 == 0) which is always zero (false). Some lazy programmers ignore precedence and parenthesise everything. Lisp fans enjoy pointing out that this can't happen in *their* favourite language, which eschews precedence entirely, requiring one to use explicit parentheses everywhere.
  • prerelease showing — a showing of a film before it goes on general release
  • process scheduling — multitasking
  • psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
  • racial segregation — social policy: separation of races
  • range of stability — the angle to the perpendicular through which a vessel may be heeled without losing the ability to right itself.
  • regional enteritis — Crohn's disease.
  • registration plate — a plate mounted on the front and back of a motor vehicle bearing the registration number
  • regular expression — 1.   (text, operating system)   (regexp, RE) One of the wild card patterns used by Perl and other languages, following Unix utilities such as grep, sed, and awk and editors such as vi and Emacs. Regular expressions use conventions similar to but more elaborate than those described under glob. A regular expression is a sequence of characters with the following meanings (in Perl, other flavours vary): An ordinary character (not one of the special characters discussed below) matches that character. A backslash (\) followed by any special character matches the special character itself. The special characters are: "." matches any character except newline; "RE*" (where RE is any regular expression and the "*" is called the "Kleene star") matches zero or more occurrences of RE. If there is any choice, the longest leftmost matching string is chosen. "^" at the beginning of an RE matches the start of a line and "$" at the end of an RE matches the end of a line. (RE) matches whatever RE matches and \N, where N is a digit, matches whatever was matched by the RE between the Nth "(" and its corresponding ")" earlier in the same RE. Many flavours use \(RE\) instead of just (RE). The concatenation of REs is a RE that matches the concatenation of the strings matched by each RE. RE1 | RE2 matches whatever RE1 or RE2 matches. \< matches the beginning of a word and \> matches the end of a word. Many flavours use "\b" instead as the special character for "word boundary". RE{M} matches M occurences of RE. RE{M,} matches M or more occurences of RE. RE{M,N} matches between M and N occurences. Other flavours use RE\{M\} etc. Perl provides several "quote-like" operators for writing REs, including the common // form and less common ??. A comprehensive survey of regexp flavours is found in Friedl 1997 (see below). 2. Any description of a pattern composed from combinations of symbols and the three operators: Concatenation - pattern A concatenated with B matches a match for A followed by a match for B. Or - pattern A-or-B matches either a match for A or a match for B. Closure - zero or more matches for a pattern. The earliest form of regular expressions (and the term itself) were invented by mathematician Stephen Cole Kleene in the mid-1950s, as a notation to easily manipulate "regular sets", formal descriptions of the behaviour of finite state machines, in regular algebra.
  • reporters' gallery — an area in parliament reserved for journalists and reporters
  • reprocessing plant — a plant where materials are treated in order to make them reusable
  • reverse angle shot — Movies. reverse shot.
  • reverse psychology — (in nontechnical use) a method of getting another person to do what one wants by pretending not to want it or to want something else or something more.
  • rolling resistance — The rolling resistance of a wheel or ball is its resistance to movement caused by friction between it and the surface it is rolling on.
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
  • secondary diagonal — a diagonal line or plane.
  • self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
  • self-glorification — a glorified or more splendid form of something.
  • self-gratification — the act of pleasing or satisfying oneself, especially the gratifying of one's own impulses, needs, or desires.
  • self-interrogation — the act of interrogating; questioning.
  • self-raising flour — flour with baking powder
  • senior high school — a school attended after junior high school and usually consisting of grades 10 through 12.
  • shatterproof glass — glass designed to resist shattering
  • shugart technology — Seagate Technology
  • sir george gilbert — Barbara Ann, 1928–2012, Canadian figure skater.
  • sixth-form college — (in England and Wales) a college offering A-level and other courses to pupils over sixteen from local schools, esp from those that do not have sixth forms
  • slim hole drilling — Slim hole drilling is drilling a well in which at least 90 percent of the hole has a diameter of seven inches or less.
  • sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
  • social engineering — the application of the findings of social science to the solution of actual social problems.
  • societal marketing — marketing that takes into account society's long-term welfare
  • sole-charge school — a rural school with only one teacher
  • spectroheliography — the process of obtaining an image of the sun in light of a particular wavelength, such as calcium or hydrogen, showing the distribution of the element over the surface and in the solar atmosphere, using a spectroheliograph
  • spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
  • strait of magellan — a strait between the mainland of S South America and Tierra del Fuego, linking the S Pacific with the S Atlantic. Length: 600 km (370 miles). Width: up to 32 km (20 miles)
  • strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
  • stretch one's legs — either of the two lower limbs of a biped, as a human being, or any of the paired limbs of an animal, arthropod, etc., that support and move the body.
  • structural geology — the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also called tectonics. Compare structure (def 7a).
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