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coleorhiza

American

[koh-lee-uh-rahy-zuh, kol-ee-] / ˌkoʊ li əˈraɪ zə, ˌkɒl i- /

noun

Botany.

the sheath that envelops the radicle in certain plants and that is penetrated by the root in germination.

coleorhiza British

/ ˌkɒlɪəˈraɪzə /

noun

a protective sheath around the radicle in grasses

"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

Other Word Forms

Noun Inflected Forms

coleorhizae

plural

Etymology

Origin of coleorhiza

1865–70; < New Latin < Greek koleó ( n ) sheath, scabbard + rhíza root ¹

Example Sentences

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See Examples For:

coleorhiza

Germination.—In germination the coleorhiza lengthens, ruptures the pericarp, and fixes the grain to the ground by developing numerous hairs.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" by Various

The sheath which envelopes the radicle is called coleorhiza and that of the plumule, pileole or germ-sheath.

From A Handbook of Some South Indian Grasses by Rangachari, K.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023