ALL meanings of diopter
di·op·ter
D d - noun diopter 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. 1
- noun diopter 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. 1
- noun diopter A unit of refractive power that is equal to the reciprocal of the focal length (in meters) of a given lens. 1
- noun diopter a unit of measure of the power of a lens, equal to the power of a lens with a focal length of one meter 0
- noun diopter 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. 0
- noun diopter (Obsolete (No longer in use)) Any lens system, such as a telescope. 0
- noun diopter (Obsolete (No longer in use)) A theodolite or similar surveyor’s angle measuring device. 0
- noun diopter (Obsolete (No longer in use)) An alidade. 0
- noun diopter (Obsolete (No longer in use)) A surgical speculum. 0
- noun diopter (Obsolete (No longer in use)) An instrument for drawing the skull by projections. 0