Definition of coleoptile in English:

coleoptile

Line breaks: cole|op¦tile
Pronunciation: /ˌkɒlɪˈɒptʌɪl
 
/

noun

Botany
  • A sheath protecting a young shoot tip in a grass or cereal.
    More example sentences
    • Samples of roots, shoots, coleoptiles, leaves, whole seeds, endosperm, and embryos were taken at the times indicated in the Results.
    • The coleoptile and all prior sheaths surrounding the fifth leaf were removed down to the seed.
    • However, in coleoptiles, hypocotyls and epicotyls, gravity can be perceived along the whole length of the responding region and there is no such need to postulate any longitudinal transfer of a message.

Origin

mid 19th century: from Greek koleon 'sheath' + ptilon 'feather'.

More definitions of coleoptile

Definition of coleoptile in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tortie
Pronunciation: ˈtôrtē
noun
a tortoiseshell cat