Definition of epidermis noun from the Oxford Advanced Learner's Dictionary

 

epidermis

 noun
noun
BrE BrE//ˌepɪˈdɜːmɪs//
 
; NAmE NAmE//ˌepɪˈdɜːrmɪs//
 
[singular, uncountable](anatomy)
 
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the outer layer of the skin Word Origin early 17th cent.: via late Latin from Greek, from epi ‘upon’ + derma ‘skin’.
See the Oxford Advanced American Dictionary entry: epidermis