prismatic layer
noun
1
or less commonly prismatic tissue
: a layer of secondary tissue developed internally by the cambium of some lycopods (as the quillworts) and interpreted as xylem, phloem, or both
2
: the middle layer of the shell of a mollusk consisting essentially of calcium carbonate arranged in prisms
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“Prismatic layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prismatic%20layer. Accessed 26 Nov. 2024.
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