pterygopalatine UK /ˌtɛ.ɹɪɡ.ə(ʊ)ˈpal.ə.tʌɪn/US /ˌtɛɹ.əɡ.oʊˈpæl.əˌtaɪn/ adjective1 •Of or pertaining to the pterygoid process of the sphenoid bone and the palatine bone.