"entropy" in the noun sense
1. information, selective information, entropy
communication theory) a numerical measure of the uncertainty of an outcome
"the signal contained thousands of bits of information"
2. randomness, entropy, S
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"
Source: WordNet® (An amazing lexical database of English)
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