Definition of coleorhiza in English:

coleorhiza

noun

Botany
  • A sheath protecting the root of a germinating grass or cereal grain.

    • ‘Seminal roots do not form a coleorhiza since the scutellar node tissue is already differentiated when seminal roots emerge and can easily be penetrated.’
    • ‘Longitudinal sections of the embryonic root showed that the structures that protect the rootlet, i.e. the root-cap and coleorhiza, were strongly labelled.’
    • ‘The coleoptile and coleorhiza are sheaths that enclose the apical meristem of the shoot and root respectively.’
    • ‘Coleoptiles and coleorhizae are found only in grasses.’
    • ‘Indeed, at the end of stage II, scutellum, coleoptile, coleorhiza, primary root primordium, and leaf primordia have already been reported to be present.’
    covering, cover, case, casing, envelope, sleeve, wrapper
    View synonyms

Origin

Mid 19th century: from koleos sheath + rhiza root.

Pronunciation

coleorhiza

/ˌkōlēəˈrīzə/