diopter

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

Roots

diadi- · Greek · through opsomaiopter- · Greek · to see

Synonyms & related words for diopter

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Words related to diopter

Explore words related to diopter — words associated with it, words that go with it, and its nearest matches in meaning. Related words include dioptric, varifocal, trifocal, dioptometer, binocle, bifocal, eyepiece, opsiometer. Click any word to make it the center of the map and keep exploring the web of connections.

Where does diopter come from?

The word diopter breaks down into 2 roots of Greek origin: di-, from Greek dia (“through”); and opter, from Greek opsomai (“to see”). Explore each root to see other English words built from the same source.