English

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

 

vestigial

 adjective
adjective
BrE BrE//veˈstɪdʒiəl//
 
; NAmE NAmE//veˈstɪdʒiəl//
 
[usually before noun] (formal or specialist)
 
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remaining as the last small part of something that used to exist vestigial traces of an earlier culture It is often possible to see the vestigial remains of rear limbs on some snakes.
See the Oxford Advanced American Dictionary entry: vestigial