Definition of anterior adjective from the Oxford Advanced Learner's Dictionary

 

anterior

 adjective
adjective
BrE BrE//ænˈtɪəriə(r)//
 
; NAmE NAmE//ænˈtɪriər//
 
[only before noun](specialist)
 
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(of a part of the body) at or near the front anterior and posterior ends of the embryo opposite posterior Word Origin mid 16th cent.: from French antérieur or Latin anterior, comparative of ante ‘before’.
See the Oxford Advanced American Dictionary entry: anterior