Both Uses

dissolution
in
Ceremony, by Silko
(Auto-generated)

In the dark he could cry for all the dreams that Rocky had as he stared out of his graduation picture; he could cry for Josiah and the spotted cattle, all scattered now, all lost, sucked away in the dissolution that had taken everything from him.†
Chpt All *

dissolution = breaking something up or bringing it to an end
But the effects were hidden, evident only in the sterility of their art, which continued to feed off the vitality of other cultures, and in the dissolution of their consciousness into dead objects: the plastic and neon, the concrete and steel.†
Chpt All

Definitions:

(1) (dissolution)
the act or process of breaking something up or bringing it to an end—for example, ending a relationship or meeting, or a substance breaking apart as it mixes into a liquid

In everyday and legal use, dissolution can mean ending a relationship, meeting, or legal body, such as the dissolution of a marriage or a company.
In chemistry, it refers to a substance breaking apart and spreading evenly through a liquid (for example, salt in water), or a compound separating into its parts by chemical action.
(2) (meaning too rare to warrant focus)