pter·y·goid 
(tĕrĭ-goid′)
(tĕrĭ-goid′)adj.
1. Of, relating to, or located in the region of the sphenoid bone: a pterygoid muscle.
2. Resembling a wing; winglike.
n.
Either of two processes descending from the body of the sphenoid bone.
[Greek pterugoeidēs, winglike : pterux, pterug-, wing; see pet- in the Appendix of Indo-European roots + -oeidēs, -oid.]