palisade mesophyll

palisade parenchyma

noun Botany.
the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of photosynthesis.
Also called palisade, palisade mesophyll.


Origin:
1880–85

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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