Anatomy 【剖】
- the dense part of the temporal bone at the base of the skull, surrounding the inner ear颞骨岩部。
- relating to or denoting this part of the temporal bone, or the nerves which pass through it（颞骨）岩部的; （颞骨）岩部神经的。
词源
mid 18th cent.: from Latin petrosus 'stony, rocky' （from petra 'rock'） + -AL.