Also found in: Medical.


adj. Biology
Hard or hardened; indurated.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) (of organisms and their parts) hard or hardened
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsklɪər ɔɪd, ˈsklɛr-)

adj. Biol.
hard or indurated.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
A typical nodule cortex of Glycine max (soybean) consists of an outer protective dead cell layer surrounding parenchymatous layers with a central layer of living, vacuolated scleroid cells with phloroglucinol-positive walls, indicating lignin-like compounds (Bergersen, 1982; Brown & Walsh, 1994).