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18-letter words containing a, l, n, i, g

  • potential gradient — the rate of change of potential with respect to distance in the direction of greatest change.
  • prerelease showing — a showing of a film before it goes on general release
  • primate of england — a title of the archbishop of Canterbury.
  • principal argument — the radian measure of the argument between −π and π of a complex number. Compare argument (def 8c).
  • principal diagonal — a diagonal line or plane.
  • programme planning — the act of creating plans or schedules, esp in relation to your occupation
  • programming skills — the skills required to write a program so that data may be processed by a computer
  • publicity campaign — an effort to convey information to the public
  • publishing company — a firm which publishes books
  • racial segregation — social policy: separation of races
  • ragtag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
  • range of stability — the angle to the perpendicular through which a vessel may be heeled without losing the ability to right itself.
  • reggio nell'emilia — a city in N Italy.
  • 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.
  • relational algebra — (database, theory)   A family of algebra with a well-founded semantics used for modelling the data stored in relational databases, and defining queries on it. The main operations of the relational algebra are the set operations (such as union, intersection, and cartesian product), selection (keeping only some lines of a table) and the projection (keeping only some columns). The relational data model describes how the data is structured.
  • replacement engine — an engine used to replace or substitute an older or broken engine (in a vehicle, etc)
  • reprocessing plant — a plant where materials are treated in order to make them reusable
  • residual magnetism — remanence.
  • resistance welding — welding utilizing pressure and heat that is generated in the pieces to be welded by resistance to an electric current.
  • restraining circle — any of three circles on the floor of a basketball court used for jump balls: other players must remain outside the circle during a jump ball
  • 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.
  • rotational molding — a method for molding hollow plastic objects by placing finely divided particles in a hollow mold that is rotated about two axes, exposing it to heat and then to cold.
  • running martingale — martingale (def 2).
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • sampling equipment — Sampling equipment is equipment which is used to remove small amounts of something for analysis and monitoring.
  • sampling frequency — sample rate
  • sampling statistic — any function of observed data, esp one used to estimate the corresponding parameter of the underlying distribution, such as the sample mean, sample variance, etc
  • school-leaving age — the minimum age that children are legally allowed to leave school - in Britain and the United States, this is 16
  • scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
  • 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.
  • secretarial agency — a recruiting business which deals with jobs for secretaries
  • self-deprecatingly — in a self-deprecating manner
  • self-disparagement — the act of disparaging.
  • 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-incriminating — serving to incriminate oneself or to expose oneself to prosecution: self-incriminating testimony.
  • self-interrogation — the act of interrogating; questioning.
  • self-raising flour — flour with baking powder
  • self-tapping screw — a screw designed to tap its corresponding female thread as it is driven.
  • self-understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
  • significance level — (in the statistical test of a hypothesis) the maximum probability of a Type I error for all distributions consistent with the null hypothesis.
  • significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
  • sleeping policeman — a bump built across roads, esp in housing estates, to deter motorists from speeding
  • social bookmarking — the practice of saving bookmarked Web pages to a public website as a way to share the links with other Internet users: Social bookmarking is a tool that allows you to add tags and comments to your bookmarks.
  • 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
  • sociotechnological — of, relating to, or signifying the combination or interaction of social and technological factors.
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