noun, plural co·le·o·rhi·zae [koh-lee-uh-rahy-zee, kol-ee-] /ˌkoʊ li əˈraɪ zi, ˌkɒl i-/. Botany.
the sheath that envelops the radicle in certain plants and that is penetrated by the root in germination.
Origin of coleorhiza
1865–70; < New Latin < Greek koleó(n) sheath, scabbard + rhíza root1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun plural -zae (-ziː)
a protective sheath around the radicle in grasses
Word Origin for coleorhiza
C19: from New Latin, from Greek koleon sheath + rhiza root
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