PETROSAL


Meaning of PETROSAL in English

[ pɪ'trəʊs(ə)l ]

■ adjective Anatomy relating to or denoting the dense part of the temporal bone surrounding the inner ear.

Origin

C18: from L. petrosus 'stony, rocky' (from petra 'rock') + -al .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.