prismatic layer

noun

Definition of prismatic layer

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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Cite this Entry

“Prismatic layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prismatic%20layer. Accessed 26 Jan. 2021.

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