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ISBN 0553262998 / 9780553262995 / 0-553-26299-8
› Find signed collectible books: 'Entropy'
entropy [È[ntrYpj] n pl -pies 1. (Physics / General Physics) a thermodynamic quantity that changes in a reversible process by an amount equal to the heat absorbed or emitted divided by the thermodynamic temperature. It is measured in joules per kelvin. Symbol S See also law of thermodynamics  2. (Physics / General Physics) a statistical measure of the disorder of a closed system expressed by S = klog P + c where P is the probability that a particular state of the system exists, k is the Boltzmann constant, and c is another constant 3. lack of pattern or organization; disorder 4. (Electronics & Computer Science / Communications & Information) a measure of the efficiency of a system, such as a code or language, in transmitting information [from en-2 + -trope] [via]