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18-letter words containing s, p, i, l, r

  • 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.
  • reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
  • reprocessing plant — a plant where materials are treated in order to make them reusable
  • resistance plasmid — any of a group of bacterial plasmids carrying genetic information that provide resistance to antibiotic drugs: some resistance plasmids are able to transfer themselves, and hence resistance, during conjugation
  • resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
  • rhodes scholarship — one of a number of scholarships at Oxford University, established by the will of Cecil Rhodes, for selected students (Rhodes scholars) from the British Commonwealth and the United States.
  • sampling frequency — sample rate
  • scholarship holder — a person who, because of academic merit, receives financial aid for their studies
  • 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.
  • seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
  • secondary syphilis — the second stage of syphilis, characterized by eruptions of the skin and mucous membrane.
  • 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-deprecatingly — in a self-deprecating manner
  • self-disparagement — the act of disparaging.
  • self-preoccupation — the state of being preoccupied.
  • self-tapping screw — a screw designed to tap its corresponding female thread as it is driven.
  • september holidays — a period of time in September when people do not have to go to school, college or work
  • set priority level — (SPL) The way traditional Unix kernels implement mutual exclusion by running code at high interrupt priority levels and thus blocking lower level interrupts.
  • shepherd satellite — a small moon orbiting near a planetary ring, whose gravitational pull helps confine the ring and the ring's extent.
  • shop till you drop — If you shop till you drop, you do a large amount of shopping.
  • sierra blanca peak — a mountain in S New Mexico: highest peak in the Sacramento Mountains. 11,997 feet (3651 meters).
  • silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
  • simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
  • sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
  • slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
  • soda-lime feldspar — plagioclase.
  • sodium-vapour lamp — a type of electric lamp consisting of a glass tube containing neon and sodium vapour at low pressure through which an electric current is passed to give an orange light. They are used in street lighting
  • solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
  • solubility product — the maximum number of undissociated ions, of an electrolyte in a saturated solution, capable at a given temperature of remaining in equilibrium with the undissolved phase of the solution.
  • special prosecutor — (formerly) an independent counsel.
  • special relativity — the state or fact of being relative.
  • specialist teacher — a teacher with expertise in working with children with special educational needs, such as dyslexia
  • spectrocolorimetry — the quantitative measure of colors by spectrophotometry.
  • spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
  • 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
  • spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
  • spectropolariscope — an instrument combining the functions of a spectroscope with those of a polariscope.
  • spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
  • spherical triangle — a triangle formed by arcs of great circles of a sphere.
  • split-level cooker — a cooker that is designed with a separate oven and hob so that they can be fitted wherever is most convenient in the kitchen
  • subatomic particle — physics:
  • super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
  • super middleweight — a boxer weighing up to 168 pounds (75.6 kg), between middleweight and light heavyweight.
  • superciliary ridge — browridge.
  • supraorbital ridge — browridge.
  • surgical appliance — a specialized device used by somebody to relieve a particular medical condition
  • temporal summation — the act or process of summing.
  • terrestrial planet — inner planet.
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