Petrosal :: Petrosal (a.) Hard; stony; petrous; as, the petrosal bone; petrosal part of the temporal bone..
Petrosal :: Petrosal (a.) Of, pertaining to, or in the region of, the petrous, or petrosal, bone, or the corresponding part of the temporal bone..
Petrostearine :: Petrostearine (n.) A solid unctuous material, of which candles are made..