Simple past tense and past participle of disintegrate.(verb)
That has undergone disintegration(adjective)
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Use "disintegrated" in a sentence
"As the label disintegrated, Defari's clout continued rising."
"The 38-year-old seven-time champion's challenge for an eighth title disintegrated yesterday on the 189-kilometre eighth stage from Station des Rousses to Morzine-Avoriaz."
"The knees of Elgin Baylor, West and the other Los Angeles players on the hardwood buckled as their bodies, once filled with supreme confidence, sighed in resignation as their title hopes disintegrated."