1. Become bony
   "The tissue ossified"
    
2. Cause to become hard and bony
   "The disease ossified the tissue"
    
3. Make rigid and set into a conventional pattern
   "ossified teaching methods";
   - rigidify, petrify

Derived forms: ossifies, ossified, ossifying

Type of: alter, change, change state, modify, stiffen, turn

Encyclopedia: Ossify