I. |me](ˌ)zō, |mē], ](ˌ)sō+\ adjective
Etymology: mes- + pterygoid, adjective
: oriented with respect to the pterygoids ; specifically : being or relating to a part or a process of the pterygoid bone of a bird, to a distinct pterygoid element of a bony fish articulating in front with the palatine, behind with the metapterygoid, and laterally with the pterygoid, or to the space in a mammal between the pterygoids of opposite sides
II. noun
Etymology: mes- + pterygoid, n.
: a mesopterygoid part (as a bone)