coleorhiza

[ koh-lee-uh-rahy-zuh, kol-ee- ]

noun

, Botany.

, plural co·le·o·rhi·zae [koh-lee-, uh, -, rahy, -zee, kol-ee-].

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

coleorhiza

/ ˌkɒlɪəˈraɪzə /

noun

1. a protective sheath around the radicle in grasses

Word History and Origins

Origin of coleorhiza¹

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

Word History and Origins

Origin of coleorhiza¹

C19: from New Latin, from Greek koleon sheath + rhiza root

Example Sentences

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

From Project Gutenberg

Coleorhiza, kol-ē-ō-rī′za, n. the root-sheath in endogens.

From Project Gutenberg

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

From Project Gutenberg