Library / English Dictionary

    DIOPTER

    Pronunciation (US): Play  (GB): Play

     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 oculistsplay

    Synonyms:

    diopter; dioptre

    Classified under:

    Nouns denoting quantities and units of measure

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

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

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