petrosal

adjective

pe·​tro·​sal pə-ˈtrō-səl 

: of, relating to, or situated in the region of the petrous portion of the temporal bone or capsule of the inner ear

Word History

Etymology

Latin petrōsus "rocky, stony" (in New Latin os petrōsum, apophysis petrōsa, names for the petrous portion of the temporal bones) + -al entry 1 — more at petrous

First Known Use

1713, in the meaning defined above

Medical Definition

petrosal

1 of 2 adjective

pe·​tro·​sal pə-ˈtrō-səl 

: of, relating to, or situated in the region of the petrous portion of the temporal bone or capsule of the inner ear

petrosal

2 of 2 noun

: petrosal bone