English dictionary
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English noun: diopter | |||
| 1. | diopter (quantity) 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 oculists | ||
| Synonyms | dioptre | ||
| Broader (hypernym) | unit, unit of measurement | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk