Meaning : A linguistic process by which one of two similar sounds in a word becomes less like the other.
Example :
The Old French MARBRE became the English MARBLE by dissimilation.
Meaning : Breakdown in living organisms of more complex substances into simpler ones together with release of energy.
Synonyms : catabolism, destructive metabolism, katabolism
The synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy.
anabolism, constructive metabolism