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

 

retina

 noun
noun
BrE BrE//ˈretɪnə//
 
; NAmE NAmE//ˈretənə//
 
(pl. retinas, retinae
BrE BrE//ˈretɪniː//
 
; NAmE NAmE//ˈretəniː//
 
)
Face
 
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a layer of tissue at the back of the eye that is sensitive to light and sends signals to the brain about what is seen See related entries: Face Word Origin late Middle English: from medieval Latin, from Latin rete ‘net’.
See the Oxford Advanced American Dictionary entry: retina