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spongy parenchyma

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noun Botany.

the lower layer of the ground tissue of a leaf, characteristically containing irregularly shaped cells with relatively few chloroplasts and large intercellular spaces.

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Also called spongy mesophyll.

Origin of spongy parenchyma

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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Scientific definitions for spongy parenchyma

spongy parenchyma
[ spŭnjē ]

A layer of cells in the interior of leaves, consisting of loosely arranged, irregularly shaped cells that have chloroplasts. The spongy parenchyma has many spaces between cells to facilitate the circulation of air and the exchange of gases. It lies just below the palisade layer. Also called spongy mesophyll See more at photosynthesis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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