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19-letter words containing p, r, o, s, l

  • inflationary spiral — Geometry. a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it.
  • insect pest control — the killing, reduction or elimination of insects which are pests, using insecticide, etc
  • isobutyl propionate — a colorless liquid, C 7 H 14 O 2 , used chiefly as a paint, varnish, and lacquer solvent.
  • judicial separation — a decree of legal separation of spouses that does not dissolve the marriage bond.
  • kilobits per second — (unit)   (kbps, kb/s) A unit of data rate where 1 kb/s = 1000 bits per second. This contrasts with units of storage where 1 Kb = 1024 bits (note upper case K).
  • knights hospitalers — a member of the religious and military order (Knights Hospitalers or Knights of St. John of Jerusalem) originating about the time of the first Crusade (1096–99) and taking its name from a hospital at Jerusalem.
  • leisure occupations — activities which you enjoy and which you perform in your free time
  • life-support system — A life-support system is the same as a life-support machine.
  • lipopolysaccharides — Plural form of lipopolysaccharide.
  • lobby correspondent — a political correspondent who reports from parliament
  • locomotive workshop — a place where locomotives are built or repaired
  • lose no opportunity — If you say that someone loses no opportunity to do or say a particular thing, you are emphasizing that they do it or say it whenever it is possible.
  • lupus erythematosus — any of several autoimmune diseases, especially systemic lupus erythematosus, characterized by red, scaly skin patches.
  • maestro di cappella — a person in charge of an orchestra, esp a private one attached to the palace of a prince in Italy during the baroque period
  • metatarsophalangeal — (anatomy) Relating to the metatarsus and phalange.
  • mild silver protein — a compound of silver and a protein, applied to mucous membranes as a mild antiseptic.
  • mucopolysaccharides — Plural form of mucopolysaccharide.
  • nail polish remover — solvent for removing nail polish
  • natural catastrophe — A natural catastrophe is an unexpected event, caused by nature, such as an earthquake or flood, in which there is a lot of suffering, damage, or death.
  • nicolaus copernicus — Nicolaus [nik-uh-ley-uh s] /ˌnɪk əˈleɪ əs/ (Show IPA), (Mikolaj Kopernik) 1473–1543, Polish astronomer who promulgated the now accepted theory that the earth and the other planets move around the sun (the Copernican System)
  • nine plus two array — the arrangement of microtubules in a flagellum or cilium, consisting of a ring of nine evenly spaced couplets surrounding two central singlets. Symbol: 9 + 2.
  • nonrepresentational — not resembling or portraying any object in physical nature: a nonrepresentational painting.
  • norfolk island pine — a coniferous evergreen tree, Araucaria heterophylla (or A. excelsa), having whorled branches and needlelike foliage, widely cultivated as a houseplant.
  • oceanus procellarum — (Ocean of Storms) the largest dark plain on the face of the moon, in the second and third quadrants: about 2 million square miles (5.2 million sq. km).
  • old english pattern — a spoon pattern having a stem curving backward at the end.
  • old world scops owl — any of a group of small owls having ear tufts and a whistling call, especially Otus scops (Old World scops owl) and O. sunia (Oriental scops owl)
  • open source license — (legal)   Any document that attempts to specify open source usage and distribution of software. These licenses are usually drafted by experts and are likely to be more legally sound than one a programmer could write. However, loopholes do exist. Here is a non-exhaustive list of open source licenses: 1. Public Domain - No license. 2. BSD License - An early open source license 3. General Public License (GPL) - The copyleft license of the Free Software Foundation. Used for GNU software and much of Linux. 4. Artistic License Less restrictive than the GPL, permitted by Perl in addition to the GPL. 5. Mozilla Public Licenses. (MPL, MozPL) and Netscape Public License (NPL).
  • operational testing — (testing)   A US DoD term for testing performed by the end-user on software in its normal operating environment.
  • optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
  • optimising compiler — (programming, tool)   compiler which attempts to analyse the code it produces and to produce more efficient code by performing program transformation such as branch elimination, partial evaluation, or peep-hole optimisation. Contrast pessimising compiler.
  • overplay one's hand — If you say that someone is overplaying something such as a problem, you mean that they are making it seem more important than it really is.
  • paleoanthropologist — the study of the origins and predecessors of the present human species, using fossils and other remains.
  • palomar observatory — an astronomical observatory situated on Palomar Mountain in S California, having a 200-inch (508-cm) reflecting telescope and a 48-inch (122-cm) Schmidt telescope.
  • parallel processing — extending in the same direction, equidistant at all points, and never converging or diverging: parallel rows of trees.
  • particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
  • particle separation — a rule that moves the particle of a phrasal verb, thus deriving a sentence like He looked the answer up from a structure that also underlies He looked up the answer
  • particular solution — a solution of a differential equation containing no arbitrary constants.
  • pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
  • percussion drilling — Percussion drilling is a drilling method which involves lifting and dropping heavy tools to break rock, and uses steel casing tubes to stop the borehole from collapsing.
  • periodontal disease — any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.
  • peritoneal dialysis — a form of dialysis in which the peritoneum is used as an autogenous semipermeable membrane
  • peroxysulfuric acid — persulfuric acid (def 1).
  • persecution complex — an acute irrational fear that other people are plotting one's downfall and that they are responsible for one's failures
  • personal belongings — possessions; things that belong to someone
  • personal stationery — headed notepaper
  • personal watercraft — a jet-propelled boat ridden like a motorcycle.
  • philosopher's stone — a substance sought by alchemists that would be capable of transmuting baser metals into gold or silver and of prolonging life.
  • philosophers' stone — a substance sought by alchemists that would be capable of transmuting baser metals into gold or silver and of prolonging life.
  • pillars of hercules — the two promontories at the E end of the Strait of Gibraltar: the Rock of Gibraltar on the European side and the Jebel Musa on the African side; according to legend, formed by Hercules
  • planning permission — In Britain, planning permission is official permission that you must get from the local authority before building something new or adding something to an existing building.
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