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Noun optical instrument has 1 sense
  1. optical instrument - an instrument designed to aid vision
    --1 is a kind of     instrument
    --1 has parts: lens, lense, lens system
    --1 has particulars:
     binocular, binoculars, field glasses, opera glasses; esophagoscope, oesophagoscope; jeweler's glass; periscope; projector; sight; spectacles, specs, eyeglasses, glasses; spectroscope, prism spectroscope
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