distortion (redirected from distortionless)

distortion /dis·tor·tion/ (dis-tor´shun)

1. the state of being twisted out of normal shape or position.

2. in psychiatry, the conversion of material offensive to the superego into acceptable form.

3. deviation of an image from the true outline or shape of an object or structure.

(A), Barrel distortion; (B), pincushion distortion.

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dis·tor·tion (d-stôrshn)

n.

1. A twisting out of normal shape or form.

2. A psychological defense mechanism that helps to repress or disguise unacceptable thoughts.

3. Parataxic distortion.

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dis·tortion·al, dis·tortion·ary adj.

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distortion,

n 1. a deviation from the normal shape or condition.
n 2. a modification of the speech sound in some way so that the acoustic result only approximates the standard sound and is not accurate.
n 3. a twisting or deformation. A loss of accuracy in reproduction of cavity form.

distortion, film-fault,

n an imperfection in the size or shape of a film image by either magnification, elongation, or foreshortening.

distortion, horizontal,

n a disproportional change in size and shape of the image in the horizontal plane as a result of oblique horizontal angulation of the radiographic beam.

distortion, magnification,

n a proportional enlargement of a radiographic image. It is always present to some degree in oral radiography but is minimized with extended focal-film distances.

distortion, vertical (foreshortening),

n a disproportional change in size, either elongation or foreshortening, caused by incorrect vertical angulation or improper film placement.

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distortion

the state of being twisted out of normal shape or position.