palisade layer

noun

Definition of palisade layer 

: a layer of columnar cells rich in chloroplasts found beneath the upper epidermis of foliage leaves

called also palisade mesophyll, palisade parenchyma, palisade tissue

— compare spongy parenchyma

First Known Use of palisade layer

1886, in the meaning defined above

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The first known use of palisade layer was in 1886

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