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  1. tel·e·scope
    IPA[ˈteləˌskōp]
  2. n. noun

    • 1. an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image magnified.

      Synonym : spyglass, glass, scope

    v. verb

  3. Variation

    • n.: noun: telescope, plural noun: telescopes

    • v.: verb: telescope, 3rd person present: telescopes, gerund or present participle: telescoping, past tense: telescoped, past participle: telescoped

    • n. noun

      a reflecting telescope in which the light from the main mirror is deflected by a small, flat secondary mirror set at 45°, sending it to a magnifying eyepiece in the side of the telescope.
    • n. noun

      an instrument used to detect radio emissions from the sky, whether from natural celestial objects or from artificial satellites.
    • n. noun

      a telescope that is used for observing terrestrial objects and gives an uninverted image.
    • n. noun

      a reflecting telescope in which light reflected from a convex secondary mirror passes through a hole in the primary mirror.
    • n. noun

      a type of catadioptric telescope having a deeply curved meniscus lens and a spheroidal primary mirror. A secondary mirror on the back of the lens brings the light to a focus just behind a hole in the primary mirror.
    • n. noun

      an astronomical telescope on an equatorial mount.
    • n. noun

      an early reflecting telescope in which light reflected from a concave elliptical secondary mirror passes through a hole in the primary mirror. It was rendered obsolete by the introduction of Newtonian and Cassegrain telescopes.
    • n. noun

      a telescope in which a mirror is used to collect and focus light.
    • n. noun

      an astronomical telescope of the earliest type, with a biconvex objective and biconcave eyepiece.
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