Definition of exodermis in English:


Syllabification: ex·o·der·mis
Pronunciation: /ˌeksōˈdərməs


  • A specialized layer in a root beneath the epidermis or velamen.
    More example sentences
    • In the endodermis and exodermis of roots, the apoplastic flow component can be modified by the existence of apoplastic barriers.
    • There were no visible differences in the development of endodermis, exodermis and aerenchyma between the two varieties and growth conditions.
    • Thus, water channels in the epidermis and/or exodermis of the older regions were especially significant for water flow.


early 20th century: from exo- 'outside', on the pattern of endodermis, epidermis.

More definitions of exodermis

Definition of exodermis in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space