'petrohyoid' definitions:

Definition of 'petrohyoid'

From: GCIDE

petrohyoid \pet`ro*hy"oid\ (p[e^]t`r[-o]*h[imac]"oid), a. [Petro + hyoid.] (Anat.) Pertaining to the petrous, or periotic, portion of the skull and the hyoid arch; as, the petrohyoid muscles of the frog. [1913 Webster]