The wearing away or falling to pieces of rocks or strata, produced by atmospheric action, frost, ice, etc
Any transformation of a nucleus, whether spontaneous or induced by irradiation, in which the nucleus emits one or more particles or photons
The drop in potency of a dietary supplement while in storage as a function of time and storage conditions (light, heat, moisture, and air) Stable supplements have a low rate of disintegration allowing for a later expiration date, while others lose potency comparatively quickly