[pe.tro.sal] adj [NL petrosa petrous portion of the temporal bone, fr. L, fem. of petrosus] (1741): of, relating to, or situated in the region of the petrous portion of the temporal bone or capsule of the inner ear
PETROSAL
Meaning of PETROSAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012