— entropic /en troh"pik, -trop"ik/ , adj. — entropically , adv.
/en"treuh pee/ , n.
a. (on a macroscopic scale) a function of thermodynamic variables, as temperature, pressure, or composition, that is a measure of the energy that is not available for work during a thermodynamic process. A closed system evolves toward a state of maximum entropy.
b. (in statistical mechanics) a measure of the randomness of the microscopic constituents of a thermodynamic system. Symbol: S
2. (in data transmission and information theory) a measure of the loss of information in a transmitted signal or message.
3. (in cosmology) a hypothetical tendency for the universe to attain a state of maximum homogeneity in which all matter is at a uniform temperature (heat death) .
4. a doctrine of inevitable social decline and degeneration.
[ Entropie (1865); see EN- 2 , -TROPY ]