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pygostyle Syllabification: py·go·style
Pronunciation: /ˈpīɡəˌstīl/

Definition of pygostyle in English:


(In a bird) a triangular plate formed of the fused caudal vertebrae, typically supporting the tail feathers.
Example sentences
  • The tail is shortened and fused to form a pygostyle which bears tail feathers (retrices).
  • All birds, both fossil and modern, have reduced the tail to a mass of fused vertebrae termed the pygostyle.


Late 19th century: from Greek pugē 'rump' + stulos 'column'.

Definition of pygostyle in:

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