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diopter

n.
1.a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters

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Word of the Day

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  • diophantus
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  • dionysius the elder
  • dionysius
  • dionysian
  • dionysia
  • dionaea muscipula
  • dionaea
  • diomedeidae
  • dior
  • diorama
  • diorite
  • dioscorea
  • dioscorea alata
  • dioscorea batata
  • dioscorea bulbifera
  • dioscorea elephantipes
  • dioscorea paniculata
  • dioscorea trifida
  • d. w. griffith
  • genus cola
  • shame plant
  • uninsurability
  • allopatric
  • calandrinia ciliata
  • undreamed
  • lipaemia
  • dissuasive
  • bespoken

  • Idiom of the Day

    shotgun wedding
    a forced wedding
    The young couple were forced into a shotgun wedding by the girl's father.



    1.
    It is not (a) / such a good book (b) / that I expected. (c) / No error (d)

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