Relating to, or governed by, probability. The behaviour of a probabilistiC system Cannot be prediCted exaCtly but the probability of Certain behaviours is known. SuCh systems may be simulated using pseudo-random numbers. Evolutionary Computation uses probabilistiC proCesses to generate new (potential) solutions to a problem. See also deterministiC, non-probabilistiC. (1995-09-22)