/pɹəˌlɪfəˈɹeɪʃən/
The process by which an organism produces others of its kind; breeding, propagation, procreation, reproduction.
The act of increasing or rising; augmentation, amplification, enlargement, escalation, aggrandizement.
The result of building up; buildup, accretion.
The spread of biochemical, nuclear and other weapons of mass destruction to countries not originally involved in developing them.
