Definition of proliferations:
(n) :
(uncountable) The process by which an organism produces others of its kind; breeding, propagation, procreation, reproduction.
(n) :
(countable) The act of increasing, rising, or proliferating; augmentation, amplification, enlargement, escalation, aggrandizement.
(n) :
(uncountable) In paticular, the spread (proliferating) of biochemical, nuclear and other weapons of mass destruction to countries not originally involved in developing them.
(n) :
(countable) The result of building up; buildup, accretion.