Third-person singular simple present indicative form of disintegrate.(verb)
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Use "disintegrates" in a sentence
"There’s a period of one-party rule and the party out of power disintegrates, is replaced by a new second party that has a different organization/ideology, etc."
"Sixteen consecutive hours now defines the moment at which acceptable phone calling disintegrates into nuisance."
"So I eat one and, as could be expected, it's stale and powdery, and just kind of disintegrates on my tongue."