American English

Definition of vestigial adjective from the Oxford Advanced American Dictionary



, NAmE//vɛˈstɪdʒiəl//
[usually before noun] (formal or technology)
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remaining as the last small part of something that used to exist vestigial traces of an earlier culture It is possible to see the vestigial remains of rear legs on some whales.
See the Oxford Advanced Learner's Dictionary entry: vestigial