verb [ intrans. ]
break up into small parts, typically as the result of impact or decay : when the missile struck, the car disintegrated in a sheet of searing flame.
• (of a society, family, or other social group) weaken or break apart : the marriage disintegrated amid allegations that she was having an affair.
• informal deteriorate mentally or physically : I thought that when I finished working on the book I'd disintegrate.
• Physics undergo or cause to undergo disintegration at a subatomic level : [ intrans. ] a meson can spontaneously disintegrate | [ trans. ] it has become a relatively easy matter to disintegrate almost any atom.