disintegration

(noun) in a decomposed state. Synonyms: decomposition.

(noun) a loss (or serious disruption) of organization in some system. Example: "A disintegration of personality."

(noun) separation into component parts. Synonyms: dissolution.

(noun) the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation. Synonyms: decay, radioactive decay.

(noun) total destruction. Synonyms: annihilation. Example: "Bomb tests resulted in the annihilation of the atoll."