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18-letter words containing u, r, i, e, l

  • quality of service — (communications, networking)   (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
  • quarry-tiled floor — a floor covered with square or diamond-shaped unglazed floor tiles
  • quarterlife crisis — a crisis that may be experienced in one's twenties, involving anxiety over the direction and quality of one's life
  • quartz-iodine lamp — a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc
  • real-time computer — a computer that can process data or information almost immediately
  • rear its ugly head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
  • red-bellied turtle — any of several freshwater turtles of the genus Pseudemys, of the eastern and southern U.S., having red markings on the lower shell.
  • 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.
  • regular tertiaries — of the third order, rank, stage, formation, etc.; third.
  • relative frequency — the ratio of the number of times an event occurs to the number of occasions on which it might occur in the same period.
  • residual magnetism — remanence.
  • restrictive clause — a relative clause that identifies the antecedent and that is usually not set off by commas in English. In The year that just ended was bad for crops, the clause that just ended is a restrictive clause.
  • resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
  • return-flue boiler — a fire-tube boiler having flues that collect the combustion gases at the end of the boiler opposite the fire door and pass them through the boiler to an uptake above the fire door.
  • revolution counter — a device for counting or recording the number of revolutions made by a rotating shaft, as of a motor or engine.
  • revolutionary wars — American Revolution.
  • rheims-douay bible — Douay Bible.
  • rub shoulders with — to mix with socially or associate with
  • rubbish collection — the collection of domestic refuse for disposal
  • run length limited — (storage)   (RLL) The most popular scheme for encoding data on magnetic disks. RLL packs up to 50% more data on a disk than MFM. Groups of bits are mapped to specific patterns of flux. The density of flux transitions is limited by the spatial resolution of the disk and frequency response of the head and electronics. However, transitions must be close enough to allow reliable clock recovery. RLL implementations vary according to the minimum and maximum allowed numbers of transition cells between transitions. For example, the most common variant today, RLL 1,7, can have a transition in every other cell and must have at least one transition every seven cells. The exact mapping from bits to transitions is essentially arbitrary. Other schemes include GCR, FM, Modified Frequency Modulation (MFM). See also: PRML.
  • running martingale — martingale (def 2).
  • russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • sampling frequency — sample rate
  • saturated solution — A saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.
  • sault sainte marie — the rapids of the St. Marys River, between NE Michigan and Ontario, Canada.
  • schwarz inequality — Also called Cauchy's inequality. the theorem that the inner product of two vectors is less than or equal to the product of the magnitudes of the vectors.
  • scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
  • secular tertiaries — of the third order, rank, stage, formation, etc.; third.
  • securities analyst — an expert who advises on investment in securities such as stocks, shares and bonds
  • security clearance — access to top secret information
  • selenium rectifier — a rectifier consisting of laminated plates of metal, usually iron, that have been coated with selenium on one side, with rectification taking place because the flow of electrons from the conductive metal to the selenium occurs more readily than the flow in the opposite direction.
  • self-instructional — pertaining to or constituting learning materials and conditions arranged so that students can proceed to learn on their own with little or no supervision.
  • self-preoccupation — the state of being preoccupied.
  • self-raising flour — flour with baking powder
  • self-understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
  • semicircular canal — any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium.
  • sexual intercourse — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
  • sexual orientation — one's natural preference in sexual partners; predilection for homosexuality, heterosexuality, or bisexuality.
  • shrubby cinquefoil — a small shrub, Potentilla fruticosa, of the rose family, native to the Northern temperate region, having pinnate leaves and numerous, showy, bright-yellow flowers.
  • silvery cinquefoil — any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans (creeping cinquefoil) of the Old World, or P. argentea (silvery cinquefoil) of North America.
  • simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
  • soldier of fortune — a person who independently seeks pleasure, wealth, etc., through adventurous exploits.
  • special prosecutor — (formerly) an independent counsel.
  • spectrofluorimeter — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
  • student councillor — a student who is a member of a council or body representing the interests of students at a school, university or college
  • subatomic particle — physics:
  • subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
  • sulfuric anhydride — sulfur trioxide.
  • sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
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