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transitional zone

transitional zone in Medicine

transitional zone n.

  1. The region of the lens of the eye where cells from the anterior epithelial capsule become transformed into the fibers that compose the lens substance.

  2. The portion of a scleral contact lens that joins the corneal and scleral sections.

The American HeritageĀ® Stedman's Medical Dictionary
Copyright Ā© 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Historical Examples
  • It may be a kind of transitional zone, from one kind of material to another, or it may be a distinct layer.

    The Flaming Mountain Harold Leland Goodwin
  • It is in a transitional zone where Ponderosa pine and junipers, pinon and scrub oak meet.

    The Pinos Altos Story Dorothy Watson

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