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a unit of prismatic deviation; deflection of one centimeter at a distance of one meter.Medical dictionary. 2011.
prism diopter — (PD) a unit used in optics to measure the deflection of light by a prism. One prism diopter represents a deflection of 1 centimeter measured at a distance of 1 meter from the prism. Mathematically, the deflection in prism diopters is equal to… … Dictionary of units of measurement
prism diopter — noun : an arbitrary standard of prismatic deflection equal to that of a prism that deflects a beam of light one centimeter on a plane placed at a distance of one meter * * * Optics. a unit of prismatic deviation, in which the number one… … Useful english dictionary
prism diopter — Optics. a unit of prismatic deviation, in which the number one represents a prism that deflects a beam of light a distance of one centimeter on a plane placed normal to the initial direction of the beam and one meter away from the prism. * * * … Universalium
diopter — (dpt or D) a metric unit used in optics to measure the refractive power of a lens. Each converging lens has a focal length, defined to be the distance from the center of the lens to the point at which the lens focuses light. (Diverging lenses … Dictionary of units of measurement
diopter — The unit of refracting power of lenses, denoting the reciprocal of the focal length expressed in meters. [G. dioptra, a leveling instrument] prism d. (p.d.) the unit of measurement of the deviation of light in passing through a prism, be … Medical dictionary
PD — Abbreviation for phenyldichloroarsine. * * * Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreas divisum; pancreatic duct; panic disorder; papilla diameter; paralyzing dose; Parkinson disease; parkinsonian… … Medical dictionary
Pd — Symbol for palladium. * * * Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreas divisum; pancreatic duct; panic disorder; papilla diameter; paralyzing dose; Parkinson disease; parkinsonian dementia;… … Medical dictionary
rule — A criterion, standard, or guide governing a procedure, arrangement, action, etc. SEE ALSO: law, principle, theorem. [O. Fr. reule, fr. L. regula, a guide, pattern] Abegg r. the tendency of the sum of the … Medical dictionary
p.d. — Abbreviation of prism diopter … Medical dictionary
PD — • Doctor of Pharmacy; • Dublin Pharmacopoeia; • interpupillary distance; • Paget disease; • pancreas divisum; • pancreatic duct; • panic disorder; • papilla diameter; • paralyzing dose; • Parkinson disease; • parkinsonian dementia; • paroxysmal… … Dictionary of medical acronyms & abbreviations
