What is the meaning of Entropy?

A measure of the disorder present in a system.

1. A measure of the disorder directly proportional to the natural logarithm of the number of microstates yielding an equivalent thermodynamic macrostate.
2. Shannon entropy

A measure of the disorder directly proportional to the natural logarithm of the number of microstates yielding an equivalent thermodynamic macrostate.

Shannon entropy

A measure of the amount of energy in a physical system that cannot be used to do work.

The capacity factor for thermal energy that is hidden with respect to temperature.

The dispersal of energy; how much energy is spread out in a process, or how widely spread out it becomes, at a specific temperature.

A measure of the amount of information and noise present in a signal.

The tendency of a system that is left to itself to descend into chaos.

Source: wiktionary.org