v.
   - breed by natural processes from the parent stock. 
▸cause to increase in number or amount.
 - promote (an idea, knowledge, etc.) widely.
 - transmit or be transmitted in a particular direction.
 
 
  Derivative
  
    - propagation n.
  - propagative adj.
 
   
  Etymology
  ME: from L. propagat-, propagare ‘multiply from layers or shoots’; rel. to propago ‘young shoot’ (from a base meaning ‘fix’).