See Also: pincushion distortion(medicine)
pincushion(dictionary)
sea pincushion(medicine)
pincushion(dictionary)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
distortion(dictionary)
Distortion(medicine)
perceptual distortion(medicine)
specimen distortion(medicine)
Barrel distortion(medicine)

pincushion distortion (medicine)


pincushion distortion
<microscopy> A geometrical distortion in a video picture, or a form of optical aberration, that makes the middle of all sides of a square appear to bow inward. The distortion can amount to several percent of the picture height in some intensified camera tubes.

See: Aberration, Distortion, Barrel distortion.