Definition of Diopters. Meaning of Diopters. Synonyms of Diopters
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Definition of Diopters
Diopter Diopter Di*op"ter, Dioptra Di*op"tra, n. [L. dioptra, fr.
Gr. ?. See 2d Dioptric.]
An optical instrument, invented by Hipparchus, for taking
altitudes, leveling, etc.