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coleorhiza

[koh-lee-uh-rahy-zuh, kol-ee-] /ˌkoʊ li əˈraɪ zə, ˌkɒl i-/
noun, plural coleorhizae
[koh-lee-uh-rahy-zee, kol-ee-] /ˌkoʊ li əˈraɪ zi, ˌkɒl i-/ (Show IPA).
Botany
1.
the sheath that envelops the radicle in certain plants and that is penetrated by the root in germination.
Origin
1865-1870
1865-70; < Neo-Latin < Greek koleó(n) sheath, scabbard + rhíza root1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for coleorhiza

coleorhiza

/ˌkɒlɪəˈraɪzə/
noun (pl) -zae (-ziː)
1.
a protective sheath around the radicle in grasses
Word Origin
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
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