Dictionary
pal'isade' paren'chyma
Bot.
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, pal'isade mes'ophyll. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.