WikiWord

English

diopter

noun

Meaning

  1. A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.
  2. The dioptre adjustment mechanism of a pair of binoculars.
  3. Any lens system, such as a telescope.
  4. A theodolite or similar surveyor’s angle measuring device.
  5. An alidade.
  6. A surgical speculum.

Etymology / origin

No prose etymology has been added yet.

No ancestor words have been linked yet.

Related words

dioptra(English)decimeter(English)densitometry(English)disdrometry(English)dosage(English)dots per inch(English)kilodyne(English)ophthalmodynamometry(English)windage(English)sighting(English)magnification(English)lens(English)

Descendant words

No descendant words have been linked yet.

Sources

  1. DictionaryAPI.dev English dictionary data
diopter — meaning and etymology | WikiWord