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

We should have a great fewer disputes in the world if words were taken for what they are, the signs of our ideas only, and not for things themselves.
John Locke