Disintegrate

Part of speech: verb (v.)

To separate into integrant parts; to reduce to fragments or to powder; to break up, or cause to fall to pieces, as a rock, by blows of a hammer, frost, rain, and other mechanical or atmospheric influences. Marlites are not disintegrated by exposure to the atmosphere, at least in six years. Kirwan.

Part of speech: verb (v.)

To decompose into integrant parts; as, chalk rapidly disintegrates.