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17-letter words containing t, r, a, i, o, l

  • 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.
  • operation sealion — the codename for Hitler's proposed invasion (1940) of Great Britain
  • 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 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.
  • organized militia — a former military organization functioning under both state and federal authority.
  • orthogonal matrix — a matrix that is the inverse of its transpose so that any two rows or any two columns are orthogonal vectors
  • orthogonalization — (mathematics) The process of converting a set of functions or vectors into orthogonal ones.
  • osculating circle — circle of curvature.
  • otolaryngological — Pertaining to otolaryngology.
  • otolaryngologists — Plural form of otolaryngologist.
  • outline agreement — a contract, etc, setting out the preliminary terms or guidelines for an agreement; a preliminary agreement
  • overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
  • pair annihilation — Physics. annihilation (def 3a).
  • palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
  • 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.
  • parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
  • particle velocity — the velocity of a point in a medium that is undergoing wave motion.
  • particularization — to make particular.
  • parts per million — the number of units (of a substance) present in a million units of another substance
  • 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.
  • personal distance — personal space.
  • personal equation — the tendency to personal bias that accounts for variation in interpretation or approach and for which allowance must be made.
  • personality clash — friction between two people who have different personalities or points of view
  • petrol filler cap — a small cover that goes over the hole in a vehicle into which you put petrol
  • philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
  • platinic chloride — chloroplatinic acid.
  • 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)
  • polarizing filter — a camera lens filter used to control the plane of polarization of light entering the lens.
  • police department — A police department is an official organization which is responsible for making sure that people obey the law.
  • political liberty — the right to express oneself freely and effectually regarding the conduct, makeup, and principles of the government under which one lives.
  • political refugee — a person who has fled from a homeland because of political persecution.
  • polyacrylonitrile — a polymer of acrylonitrile used in the manufacture of Orlon and other synthetic textiles.
  • polyvinyl butyral — a white, water-insoluble, polyvinyl acetal made with butyraldehyde, used chiefly as an interlayer in the manufacture of safety glass.
  • portfolio manager — a person employed by others to make investments for them
  • positive polarity — the grammatical characteristic of a word or phrase, such as delicious or rather, that may normally only be used in a semantically or syntactically positive or affirmative context
  • post-and-rail tea — (in the 19th century) a coarse tea in which floating particles resembled a post-and-rail fence
  • postal stationery — an envelope, postal card, wrapper, or aérogramme, with the stamp printed directly on the paper.
  • poststructuralism — a variation of structuralism, often seen as a critique, emphasizing plurality of meaning and instability of concepts that structuralism uses to define society, language, etc.
  • posttranslational — Genetics, Biochemistry. occurring after the synthesis of a polypeptide chain.
  • postural drainage — a therapy for clearing congested lungs by placing the patient in a position for drainage by gravity, often accompanied by percussion with hollowed hands.
  • potential divider — a resistor or series of resistors connected to a voltage source and used to provide voltages that are fractions of that of the source.
  • pre-qualification — a quality, accomplishment, etc., that fits a person for some function, office, or the like.
  • pre-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
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