Tapetum definition

tə-pētəm
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(botany) A nutritive tissue that surrounds certain developing spores, particularly the microspores within an anther.
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A reflective membrane in the back of the eye of many animals that are active during low-light conditions.
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A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.
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(anat., zool.) Any of various membranous layers.
  • The iridescent choroid membrane in the eye of certain animals, as the cat.
  • A layer of fibers from the corpus callosum forming a portion of the roof of each lateral ventricle of the brain.
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(bot.) A nutritive layer of cells lining the inner wall of a fern sporangium or of an anther.
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A reflective membrane in the back of the eye of many animals that are active during low-light conditions.
noun
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A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.
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(anatomy) A membranous layer of tissue.
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Origin of tapetum

  • Medieval Latin tapētum coverlet from Latin tapēte, *tapētum from Greek tapēs tapēt- tapestry

    From American Heritage Dictionary of the English Language, 5th Edition