palisade layer

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palisade layer

n.
A layer below the upper epidermis of a leaf made up of columnar cells that have numerous chloroplasts and are oriented with the long axis of each cell perpendicular to the leaf surface. Also called palisade parenchyma.

pal·i·sade layer

(păl′ĭ-sād′)
A layer of cells just below the upper surface of most leaves, consisting of cylindrical cells that contain many chloroplasts and stand at right angles to the leaf surface. Also called palisade parenchyma. See more at photosynthesis.