Definitions for diopter

• Definition
• Anagrams (248)

diopter di·op·ter

Spelling: [dahy-op-ter]

IPA: /daɪˈɒp tər/

Diopter is a 7 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 11 points.

You can make 248 anagrams from letters in diopter (deioprt).

Definitions for diopter

noun

1. Optics. a unit of measure of the refractive power of a lens, having the dimension of the reciprocal of length and a unit equal to the reciprocal of one meter. Abbreviation: D.
2. an instrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects.

Origin of diopter

1585-95; Latin dioptra Greek: instrument for measuring height or levels, equivalent to di- di-³ + op- (for ópsesthai to see) + -tra noun suffix of means

Examples for diopter

The unit of power employed by spectacle-makers is termed the diopter or dioptric (see Spectacles).

diopter, the unit in terms of which the power of a lens or curved mirror can be expressed.