entropy meaning and definition

ENTROPY noun

Definition of entropy (noun)

1. (communication theory) a numerical measure of the uncertainty of an outcome
   • "the signal contained thousands of bits of information"
   • synonyms: information, selective information
2. (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work
   • "entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity"
   • synonyms: randomness, S