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Definition of: tapetum
(tə·pē′təm) noun plural ·ta (-tə)
1. Bot. A nutrient layer of cells lining the sporangium or the anther of certain plants.
2. Zool. A membranous layer, especially the iridescent portion of the choroid coat in certain animals whose eyes shine in the dark.
3. Anat. A layer of fibers of the corpus callosum. [<LL <L tapete carpet]
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