[ mez-uh-fil, mes-, mee-zuh-, -suh- ]
/ ˈmɛz ə fɪl, ˈmɛs-, ˈmi zə-, -sə- /

noun Botany.

the parenchyma, usually containing chlorophyll, that forms the interior parts of a leaf.

Origin of mesophyll

First recorded in 1830–40; meso- + -phyll

Related forms

mes·o·phyl·lic, mes·o·phyl·lous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mesophyll

British Dictionary definitions for mesophyll


/ (ˈmɛsəʊˌfɪl) /


the soft chlorophyll-containing tissue of a leaf between the upper and lower layers of epidermis: involved in photosynthesis

Derived Forms

mesophyllic or mesophyllous, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for mesophyll


[ mĕzə-fĭl′ ]

The tissues of a leaf that are located in between the layers of epidermis and carry on photosynthesis, consisting of the palisade layer and the spongy parenchyma. Most mesophyll cells contain chloroplasts.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.