Definition of hypocotyl in English:

hypocotyl

Syllabification: hy·po·cot·yl
Pronunciation: /ˈhīpəˌkätl, ˌhīpəˈkätl
 
/

noun

Botany
The part of the stem of an embryo plant beneath the stalks of the seed leaves, or cotyledons, and directly above the root.
More example sentences
  • A wide variety of organs from various plant species were analysed: roots, stems, hypocotyls, leaves, fruits, and petioles.
  • In wild-type Arabidopsis plants, the roots, hypocotyls, and inflorescence stems exhibit gravitropic bending.
  • Callus was formed on cotyledons, hypocotyls, and radicles of embryos.

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Word of the day abjure
Pronunciation: əbˈdʒʊə
verb
solemnly renounce (a belief, cause, or claim)