depinisyon kahulugan
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doc Definition of diopter
    English to English
  • a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
  • source: WordNet 3.0
  • An optical instrument, invented by Hipparchus, for taking altitudes, leveling, etc.
  • source: Webster 1913
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