DIOPTRE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

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

Synonyms:

diopter; dioptre

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("dioptre" is a kind of...):

unit; unit of measurement (any division of quantity accepted as a standard of measurement or exchange)

Credits