precondition
noun /ˌpriːkənˈdɪʃn/
  /ˌpriːkənˈdɪʃn/
 - precondition (for/of something) something that must happen or exist before something else can exist or be done synonym prerequisite
- A ceasefire is an essential precondition for negotiation.
 - The talks will be held without preconditions.
 - Certain problems have to be solved as a precondition to any agreement.
 - The reduction of inflation is the precondition of renewed growth.