Definition of exodermis in English:

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Pronunciation: /ˌeksōˈdərməs/


A specialized layer in a root beneath the epidermis or velamen.
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.

For editors and proofreaders

Syllabification: ex·o·der·mis

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