👉 Tridynamous is a phrase that refers to a type of dynamic system in which the state and the input are both variables. It's often used in systems engineering, where it describes a system that can be modeled as a combination of two or more independent subsystems that interact with each other through feedback loops. For example, if we have a system consisting of two components, one of which is driven by an input signal and the other by another component, then the state of this system can be