D defs.my
Entry 1 sense Webster, 1913

petrohyoid

/(pĕt`rō̇*hī"oid)/ · pet·ro·hy·oid · IPA
01 a. Pertaining to the petrous, or periotic, portion of the skull and the hyoid arch; as, the petrohyoid muscles of the frog.
  1. 1.
    Pertaining to the petrous, or periotic, portion of the skull and the hyoid arch; as, the petrohyoid muscles of the frog.(Anat.)