1. (of bone especially the temporal bone) resembling stone in hardness
   - stonelike

See also: hard

Encyclopedia: Petrous

• onycholysis
• Onychomys
• Onychophora
• onychophoran
• onychosis
• onymous
• onyx
• onyx marble
• onyxis
• oocyte
• oodles
• oogenesis
• ooh
• oolite
• oology
• oolong
• Oom Paul Kruger
• oomph
• Oomycetes
• oooh
• oophorectomy
• oophoritis
• oophorosalpingectomy
• oops
• oops-a-daisy