1. Resistant to shattering or splintering
   - shatterproof, splinterless

See also: unbreakable

• ostentation
• ostentatious
• ostentatiously
• ostentatiousness
• osteo-
• osteoarthritis
• osteoblast
• osteoblastoma
• osteochondroma
• osteoclasis
• osteoclast
• osteocyte
• osteodystrophy
• osteogenesis imperfecta
• osteogenic sarcoma
• Osteoglossidae
• Osteoglossiformes
• osteoid
• osteologer
• osteological
• osteologist
• osteology
• osteolysis
• osteoma
• osteomalacia