Webster Definitions
1. State of things in which chance is supreme.
2. Inherent unpredictability in the behavior of a natural system (atmosphere, boiling water, beating heart)
3. State of utter confusion.
Involving a random variable, chance or probability.
Determinism, Deterministic-
Theory that acts of the will, occurrences in nature, or social or psychological phenomena are causally determined by preceding events or natural law.