Dissolution:

Noun 1. dissolution - the process of going into solution; "the dissolving of salt in water"
dissolving
liquefaction - the conversion of a solid or a gas into a liquid 
2. dissolution - separation into component parts
disintegration
fibrinolysis - a normal ongoing process that dissolves fibrin and results in the removal of small blood clots; "drugs causing fibrinolysis have been utilized therapeutically"
lysis - (biochemistry) dissolution or destruction of cells such as blood cells or bacteria
natural action, natural process, activity, action - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"