| petrous | -หิน [แพทยศาสตร์ ๖ ส.ค. ๒๕๔๔] |
| petrous | (adj) (of bone especially the temporal bone) resembling stone in hardness, Syn. stonelike |
| Petrous | a. [ L. petrosus, fr. petra a stone. ] |
| Saltpetrous | a. [ Cf. F. salpêtreux. ] Pertaining to saltpeter, or partaking of its qualities; impregnated with saltpeter. [ Obs. ] [ 1913 Webster ] |