# dioptre definition

• noun:
• Alternative spelling of diopter.
• A unit employed by oculists in numbering glasses based on the metric system; a refractive energy add up to that of a glass whose major focal length is one meter.
• a unit of dimension of this refractive power of a lens which is equal to the reciprocal associated with focal size measured in meters; used by oculists
• alternate spelling of diopter.
• A unit used by oculists in numbering spectacles according to the metric system; a refractive energy add up to that a glass whose principal focal distance is the one meter.
• a unit of measurement of the refractive power of a lens which is equal to the reciprocal associated with focal size calculated in meters; utilized by oculists

## Related Sources

• Definition for "dioptre"
• Alternative spelling of diopter.
• Sentence for "dioptre"
• It features multi-coated optics which ensures…
• Hypernym for "dioptre"
• unit