Definition of exodermis in English:
 exodermis
nounˌɛksə(ʊ)ˈdəːmɪsˌeksōˈdərməs
mass nounBotany A specialized layer in a root beneath the epidermis or velamen.
 Example sentencesExamples
-  There were no visible differences in the development of endodermis, exodermis and aerenchyma between the two varieties and growth conditions.
 -  In the endodermis and exodermis of roots, the apoplastic flow component can be modified by the existence of apoplastic barriers.
 -  Thus, water channels in the epidermis and/or exodermis of the older regions were especially significant for water flow.
 -  After switching to UV illumination, a clear image of the fluorescent exodermis allowed observation and measurement of its component cells.
 -  The root endodermis and, to a lesser extent, exodermis have been identified as possible membrane control points for radial water flux in roots.
 
Origin
  
Early 20th century: from exo- 'outside', on the pattern of endodermis, epidermis.