pterygoid           
adjective  medical specialized uk/ˈter.ɪ.ɡɔɪd/ us/ˈter.ɪˌɡɔɪd/
 蝶骨的
relating to the sphenoid bone (= a bone in the lower part of the skull)
  楔形的
used to describe a part of the body that is shaped like a wing
 
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