pterygospinous

adjective
pter·​y·​go·​spi·​nous | \ ˌter-ə-gō-ˈspī-nəs How to pronounce pterygospinous (audio) \

Medical Definition of pterygospinous

: situated or extending between the lateral pterygoid plate and the inferiorly directed spine on the posterior part of the greater wing of the sphenoid bone