| CA | anterior commissure [Lat. commissura anterior]; calcium antagonist; California [rabbit]; cancer; Can... |
|---|---|
| MMA | mastitis-metritis-agalactia [syndrome]; medical management analysis; medical materials account; meth... |
| AB | aberration |
|---|---|
| CA | Chromosomal aberration |
| CA | Chromosome aberration |
| NA | nuclear aberration |
| TCA | transverse chromatic aberration |
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| curvature aberration | Lack of spatial correspondence causing the image of a straight extended object to appear curved. (05 Mar 2000) |
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| angular curvature | A gibbous deformity, i.e., a sharp angulation of the spine, occurring in Pott's disease. Synonym: Pott's curvature. (05 Mar 2000) |
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| anterior curvature | Curvature in which a more distal or cephalad part is deviated anteriorly with respect to the coronal anatomic plane. (05 Mar 2000) |
| backward curvature | Curvature in which a more distal or cephalad part is deviated posteriorly with respect to the coronal anatomic plane. (05 Mar 2000) |
| gingival curvature | The rounding of the gum along its line of attachment to the neck of a tooth. (05 Mar 2000) |
| greater curvature of stomach | The border of the stomach to which the greater omentum is attached. Synonym: curvatura ventriculi major. (05 Mar 2000) |
| curvature | A bending or flexure. See: angulation. Synonym: curvatura. Origin: L. Curvatura, fr. Curvo, pp. -atus, to bend, curve (05 Mar 2000) |
| curvature hyperopia | Hyperopia due to decreased refraction of the anterior ocular segment. (05 Mar 2000) |
| Pott's curvature | A gibbous deformity, i.e., a sharp angulation of the spine, occurring in Pott's disease. Synonym: Pott's curvature. (05 Mar 2000) |
| curvature of field | <microscopy> A property of lens that causes the image of a plane to be focused into a curved surface instead of a plane. The image plane formed by a single lens is naturally curved. While one part of the field will be in good focus, the rest will need refocusing to be sharp. While the eye may partially correct for this, a camera lens will not, and the final image as photographed will not be in perfect focus over the entire image plane. (05 Aug 1998) |
| spinal curvature | See: kyphosis, lordosis, scoliosis. (05 Mar 2000) |
| occlusal curvature | A curved surface which makes simultaneous contact with the major portion of the incisal and occlusal prominences of the existing teeth, the curve of a dentition on which the occlusal surfaces lie. Synonym: occlusal curvature. (05 Mar 2000) |
| lateral curvature | Curvature in which a more distal part is deviated away from the anatomic sagittal plane. (05 Mar 2000) |
| lesser curvature of stomach | The right border of the stomach to which the lesser omentum is attached. Synonym: curvatura ventriculi minor. (05 Mar 2000) |
| aberration | 1. <ophthalmology> Any error that results in image degradation. Such errors may be chromatic, spherical, astigmatic chromatic, distortion, or curvature of field: and can result from design or execution, or both. 2. <physics> Failure of an optical or electron-optical lens to produce exact geometrical (and chromatic) correspondence between an object and its image. In a video camera tube or cathode-ray tube, aberrations are when the (electrostatic or electromagnetic) lens does not bring the electron beam to sharply focused points uniformly on the target or screen, or to correct geometrical positions, as the beam is deflected. 3. <zoology> A term which, if used to denote a number of individuals within a species, unequivocally signifies infrasubspecific rank. See: aberration, chromatic, aberration, spherical. (09 Jan 1998) |
| aberration, chromatic | <optics> A defect in a lens or optical system due to the greater refraction of shorter wavelengths over that of loner ones at a lens surface. Hence the focal length of a simple lens is shorter for blue than for red rays. This dispersion of the wave-lengths will cause colour fringes in the image field of a lens with such an aberration. (05 Aug 1998) |
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