1. A very large metropolitan area or city with an exceptionally high population, typically exceeding 10 million inhabitants
São Paulo is considered one of the largest megacities in the world.
São Paulo é considerada uma das maiores megápoles do mundo.
2. An urban agglomeration characterized by extensive infrastructure, economic importance, and significant influence on regional and global scales
Tokyo is a megacity known for its advanced technology and dense population.
Tóquio é uma megápole conhecida por sua tecnologia avançada e população densa.