Dynamism is one-third of the Metaphysic Trinity, along with Stasis and Entropy. Dynamism is the force of generation, creation, and creativity. Dynamism is represented in the Triat by the Wyld - or perhaps Dynamism represents the Wyld in the Metaphysic Trinity; the exact relationship isn't quite clear.
People and places that are strongly Dynamic are extremely low in Banality (and are often repositories of Glamour), especially if the Dynamism is highly creative. Dynamism is also strongly linked to Yang chi.