Definition of dioptre

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  • dioptre is a valid Scrabble US word with a point value of 10
  • dioptre is a valid Scrabble UK word with a point value of 10
  • dioptre is a valid Words with friends word with a point value of 11

Definition of dioptre

  • 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 (noun)

    Synonyms

    1. diopter

See definition of dioptre in Merriam Webster