| Noun | 1. | chaos - a state of extreme confusion and disorderconfusion - disorder resulting from a failure to behave predictably; "the army retreated in confusion" balagan - a word for chaos or fiasco borrowed from modern Hebrew (where it is a loan word from Russian); "it was utter and complete balagan!" | |
| 2. | chaos - the formless and disordered state of matter before the creation of the cosmos | |
| 3. | Chaos - (Greek mythology) the most ancient of gods; the personification of the infinity of space preceding creation of the universe | |
| 4. | chaos - (physics) a dynamical system that is extremely sensitive to its initial conditionsdynamical system - (physics) a phase space togther with a transformation of that space | |