pteryg-
combining form 
or pterygo-
Etymology: Greek, from pteryg-, pteryx; akin to Greek pteron wing, feather — more at feather 
1. : wing : fin 
< pterygoblast >
< pterygobranchiate >
2. : pterygoid and 
< pterygomalar >
or pterygo-
1.
< pterygoblast >
< pterygobranchiate >
2.
< pterygomalar >