Disassimilation
Pronunciation : Dis`as*sim`i*la"tion
Part of Speech : n.
Definition : Defn: The decomposition of complex substances, within the organism, into simpler ones suitable only for excretion, with evolution of energy, -- a normal nutritional process the reverse of assimilation; downward metabolism. The breaking down of already existing chemical compounds into simpler ones, sometimes called disassimilation. Martin.
(Physics)
Source : Webster's Unabridged Dictionary, 1913