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17-letter words containing t, c, o, l

  • once-over-lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.
  • online dictionary — a dictionary that is available on the Internet or World Wide Web and accessed through a Web browser using a computer or a mobile device, primarily by typing a query term into a search box on the site. Online dictionaries like Dictionary.com offer immediate, direct access through large databases to a word's spelling and meanings, plus a host of ancillary information, including its variant spellings, pronunciation, inflected forms, origin, and derived forms, as well as supplementary notes on matters of interest or concern about how the word is used: Some people think online dictionaries will make print dictionaries obsolete.
  • onomatopoetically — the formation of a word, as cuckoo, meow, honk, or boom, by imitation of a sound made by or associated with its referent.
  • opportunistically — adhering to a policy of opportunism; practicing opportunism.
  • optical astronomy — the branch of observational astronomy using telescopes to observe or photograph celestial objects in visible light.
  • optical carrier 3 — (networking)   (OC-3) A SONET rate of 3 * 51.84 = 155.52 megabits per second, which matches STS-3.
  • optical carrier n — (networking)   (OC-n) A SONET rate of n times 51.84 megabits per second.
  • optical computing — (hardware)   (Or "Optical Signal Processing") Operating on data represented using electromagnetic radiation, e.g. visible light, instead of the electrical signals used in a conventional electronic digital computer. Electronic digital computers are built from transistors. These form components that store data and logic gates that perform the low-level Boolean operations such as AND, OR and NOT that are the basis of all digital computation. The optical equivalent requires material with a non-linear refractive index such that light beams can interact with each other to perform the same Boolean operations. Though the photons that carry optical signals offer some theoretical advantages over the electrons that carry electronic signals, there are many practical problems that would have to be overcome before optical computing could compete in terms of cost, power and speed.
  • optical isomerism — stereoisomerism in which the isomers are identical in molecular weight and most chemical and physical properties but differ in their effect on the rotation of polarized light.
  • osculating circle — circle of curvature.
  • otolaryngological — Pertaining to otolaryngology.
  • oystershell scale — a scale insect, Lepidosaphes ulmi, having a scale shaped like the shell of an oyster, which infests various deciduous trees and shrubs.
  • palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
  • palaeoclimatology — the study of climates of the geological past
  • paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
  • paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
  • papanicolaou test — Pap test.
  • parallel computer — parallel processor
  • particle velocity — the velocity of a point in a medium that is undergoing wave motion.
  • particularization — to make particular.
  • pashmina politics — the adoption of political policies immediately after they have gone out of fashion
  • pathological liar — a person who tells lies frequently, with no rational motive for doing so.
  • patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
  • peacock butterfly — a European nymphalid butterfly, Inachis io, having reddish-brown wings each marked with a purple eyespot
  • pebbleweave cloth — an irregularly textured material made from twisted yarn
  • pentachlorophenol — a white, crystalline, water-insoluble powder, C 6 Cl 5 OH, used chiefly in fungicides, disinfectants, and wood preservatives.
  • perchloroethylene — tetrachloroethylene.
  • percussion bullet — a bullet that is exploded by percussion
  • peridot of ceylon — a honey-colored tourmaline, used as a gem: not a true peridot.
  • personal computer — a compact computer that uses a microprocessor and is designed for individual use, as by a person in an office or at home or school, for such applications as word processing, data management, financial analysis, or computer games. Abbreviation: PC.
  • personal distance — personal space.
  • personality clash — friction between two people who have different personalities or points of view
  • peterloo massacre — an incident at St Peter's Fields, Manchester, in 1819 in which a radical meeting was broken up by a cavalry charge, resulting in about 500 injuries and 11 deaths
  • petrol filler cap — a small cover that goes over the hole in a vehicle into which you put petrol
  • phenethyl alcohol — a colorless, viscous, slightly water-soluble liquid, C 8 H 1 0 O, having a faint roselike odor: used chiefly in perfumery.
  • phenyl isocyanate — a liquid reagent, C 7 H 5 NO, having an unpleasant, irritating odor: used chiefly for identifying alcohols and amines.
  • philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
  • phonetic alphabet — an alphabet containing a separate character for each distinguishable speech sound.
  • photoluminescence — luminescence induced by the absorption of infrared radiation, visible light, or ultraviolet radiation.
  • photovoltaic cell — a photocell in which an electromotive force is generated by a photovoltaic effect.
  • planck's constant — the fundamental constant of quantum mechanics, expressing the ratio of the energy of one quantum of radiation to the frequency of the radiation and approximately equal to 6.624 × 10− 27 erg-seconds. Symbol: h.
  • plastic explosive — a puttylike substance that contains an explosive charge, and is detonated by fuse or by remote control: used especially by terrorists and in guerrilla warfare.
  • platinic chloride — chloroplatinic acid.
  • pocket battleship — a small heavily armed and armored warship serving as a battleship because of limitations imposed by treaty.
  • pocket calculator — an electronic calculator small enough to be carried on one's person.
  • point reyes lilac — a prostrate shrub, Ceanothus gloriosus, of southern California, having leathery, roundish leaves and purplish or deep-blue flowers.
  • polar continental — a type of cold, dry air mass originating at high latitudes over land areas
  • polar coordinates — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
  • police department — A police department is an official organization which is responsible for making sure that people obey the law.
  • police helicopter — a helicopter used in police operations, for example in traffic control, or for observation
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