diopter
- Noun. 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.
- Noun. (obsolete) Any lens system, such as a telescope.
- Noun. (obsolete) A theodolite or similar surveyor’s angle measuring device.
- Noun. (obsolete) An alidade.
- Noun. (obsolete) A surgical speculum.
- Noun. (obsolete) An instrument for drawing the skull by projections.
This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.