English

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

 

archaeopteryx

 noun
noun
BrE BrE//ˌɑːkiˈɒpterɪks//
 
; NAmE NAmE//ˌɑːrkiˈɑːpterɪks//
 
 
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the oldest known bird, which existed about 150 million years ago Word Originfrom archaeo- ‘ancient’ + Greek pterux ‘wing’.
See the Oxford Advanced American Dictionary entry: archaeopteryx