Dictionary.com
Thesaurus.com
Synonyms

disintegration

American  
[dis-in-tuh-grey-shuhn] / dɪsˌɪn təˈgreɪ ʃən /

noun

  1. the act or process of disintegrating.

  2. Physics. radioactive decay.


Other Word Forms

  • nondisintegration noun

Etymology

Origin of disintegration

First recorded in 1790–1800; disintegrate + -ion

Explanation

Disintegration is when one thing splits into parts or just ceases to exist. When something is destroyed, broken up into pieces, or falls apart on its own, that’s disintegration. If you know that integration brings things or people together, you won't be surprised that disintegration means things are coming apart. Disintegration is what happens when a company breaks into smaller companies or when a band splits up. Often, disintegration is physical — a bomb could cause the disintegration of its target. The decomposition (rotting) of a body is an example of disintegration. When something radioactive decays, that's disintegration, too. Disintegration is when it all falls apart.

Keep Reading on Vocabulary.com

Vocabulary lists containing disintegration

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Bush nor President Mikhail Gorbachev anticipated: the disintegration of the U.S.S.R.

From The Wall Street Journal • Feb. 24, 2026

Aung San's wartime comrade Ne Win, who had taken the helm of the armed forces after the leader's assassination in murky circumstances, swooped in in a putsch he justified as protection against Myanmar's disintegration.

From Barron's • Dec. 23, 2025

It is also no surprise an Australian captain who reveled in "mental disintegration" thought proceedings were set by a similar incident 27 years earlier.

From BBC • Nov. 20, 2025

Jaglom’s 1985 film, “Always,” in which he co-starred with his ex-wife Patrice Townsend, was inspired by the disintegration of the couple’s own relationship.

From Los Angeles Times • Sep. 25, 2025

The three teammates seemed unconcerned by the reports of Ian’s reprehensible behavior and rumors predicting their expedition’s imminent disintegration.

From "Into Thin Air" by Jon Krakauer