English definition of Dioptre

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Definition of dioptre

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Dioptre (n.) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.

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Dioptric :: Dioptric (n.) A dioptre. See Dioptre.

Dioptry :: Dioptry (n.) A dioptre.

Dioptric :: Dioptric (a.) Of or pertaining to the dioptre, or to the metric system of numbering glasses..

Dioptre :: Dioptre (n.) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.