Momentary Impermanence is the basis of continuous impermanence. All composite phenomena are impermanent in that they are momentary: the moment they come into existence, they disintegrate. In other words, whatever is created is annihilated in the same instant.

From a macro perspective, all things that are created abide in the world for a time before they disintegrate – the process of arising and ceasing cannot be instantaneous. However, in examining phenomena on a microcosmic level, we discover all things arise and cease at the same time.

- Quote from The Four Seals of Dhama, "All Phenomena Lack Self-Existence"