1. making a public or formal statement about something
The company is announcing a new product launch tomorrow.
A empresa está anunciando o lançamento de um novo produto amanhã.
2. informing someone of something, typically in a clear and often official way
She walked in announcing her arrival loudly.
Ela entrou anunciando sua chegada em voz alta.
3. serving as a sign or indication of something
The dark clouds were announcing an incoming storm.
As nuvens escuras estavam anunciando uma tempestade iminente.