Diopter
Definition & Meaning
Part of speech noun
Quick meaning: Diopter is a noun meaning The dioptre adjustment mechanism of a pair of binoculars or of a camera viewfinder.
Meaning
The dioptre adjustment mechanism of a pair of binoculars or of a camera viewfinder.
More Meanings
- 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.
- (photography, dated) A lens element attached to the front of a photographic lens to shorten the lens's minimum focus distance; also called a "close-up filter".
- (obsolete) Any lens system, such as a telescope.
- (obsolete) A theodolite or similar surveyor’s angle measuring device.
- (obsolete) An alidade.
- (obsolete) A surgical speculum.
- (obsolete) An instrument for drawing the skull by projections.
Word Forms
- diopters
- dioptra
- dioptre
- dioptry
Related Words
Related dictionary entries include dioptra, decimeter, densitometry, disdrometry, dosage, kilodyne.
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Sources & Attribution
FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0
Dictionary data is provided by FreeDictionaryAPI.com and sourced from Wiktionary under its stated license.