1. The movement of a wave through a medium
   "The propagation of sound waves through water is faster than through air"
    
2. The spreading of something (a belief or practice) into new regions
   "The propagation of the new technology was rapid";
   - extension
    
3. The act of producing offspring or multiplying by such production
   "The propagation of plants can be done through seeds or cuttings";
   - generation, multiplication

Derived forms: propagations

Type of: airing, dissemination, facts of life, physical phenomenon, procreation, public exposure, reproduction, spreading

Encyclopedia: Propagation