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shadow (shad´o)

1. A surface area defined by the interception of light rays by a body. See also density (3) . 2. In jungian psychology, the archetype consisting of collective animal instincts. 3. achromocyte
acoustic s.sonographic appearance of reduced echo amplitude from regions lying beyond an attenuating object. Cf. acoustic enhancement.
Gumprecht's s.'ssmudge cells, under cell
hilar s.radiographic hilum of the lung; a composite radiographic shadow of the central pulmonary arteries and veins, with associated bronchial walls and lymph nodes, within the right or left lung.
Ponfick's s.achromocyte
radiographic parallel line s.'stram lines, under line


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