Associations to the word «Dioptre»

Wiktionary

DIOPTRE, noun. Alternative spelling of diopter

Dictionary definition

DIOPTRE, noun. 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.

Wise words

Words - so innocent and powerless as they are, as standing in a dictionary, how potent for good and evil they become in the hands of one who knows how to combine them.
Nathaniel Hawthorne