probabilistic [from Latin. probabilis = probable], stochastic, having to do with chance (coincidence) or probability. Events or processes are probabilistic if they are random or contain at least some random component such that their occurrence is more or less likely. A theory or model is probabilistic if it formalizes the processes to which it relates using mathematical probability theory, so that e.g. probability distributions appear. Chaos, Determinism, Probabilism, Causation.