tapetum

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“
It has been estimated that this reflecting layer, the tapetum, doubles the sensitivity of the eyes that possess them.

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Definitions (9)

Toggle American Heritage definitions American Heritage Dictionary (3)

  1. noun Botany A nutritive tissue within the sporangium, particularly within an anther.
  2. noun Anatomy A membranous layer or region, especially the iridescent membrane of the choroid of certain mammals.
  3. noun Anatomy A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Medieval Latin tapētum, coverlet, from Latin tapēte, *tapētum, from Greek tapēs, tapēt-; see tapestry.

Toggle Century etymologies Century Dictionary (1)

  1. New Latin, from Latin tapete, Middle Latin tapetum, from Greek τάπης (ταπητ-), a carpet, rug: see tappet.
 

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/təˈpitəm/
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