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rod

Pronunciation: rod

Definition:

  1. A slender cylindric structure or device.
  2. The photosensitive, outward-directed process of a rhodopsin-containing rod cell in the external granular layer of the retina; many millions of such rods, together with the cones, form the photoreceptive layer of rods and cones.

Synonym(s): rod cell of retina

[A.S. rod]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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