Entropy can also decrease--enzymes do this unto entropy all the time as does anything which expends energy ordering things around. This video animates making order out of chaos--decreasing entropy: the red and green blocks sort themselves and separate. The ordering happens because the red blocks differ slightly from the green blocks and fit together better.
1868, from Ger. Entropie "measure of the disorder of a system," coined 1865 (on analogy of Energie) by German physicist Rudolph Clausius (1822-1888) from Gk. entropia "a turning toward," from en "in" (see en- (2)) + trope "a turning" (see trope). Related: Entropic.