disintegrate

An object or system disintegrates when it falls apart and loses its shape and structure.

Disintegrate is often used when something that's been put together with glue, tape, or other materials starts to come undone. For example, you might say that a book fell apart in the rain because it had started to disintegrate. This can happen with objects like old furniture, cardboard boxes, or even buildings if they've been damaged by weather or age. In science, disintegrate is also used to describe what happens when an object breaks down into its smallest parts, often due to a strong chemical reaction or a lot of energy being released.