1. The final, most significant, or conclusive transformation or alteration of something
The ultimate change in their relationship came when they decided to move in together.
A mudança definitiva no relacionamento deles veio quando decidiram morar juntos.
2. A complete or radical transformation that represents the end state of a process
The ultimate change in technology revolutionized how we communicate.
A mudança definitiva na tecnologia revolucionou a forma como nos comunicamos.