1. Initial meetings or interactions between people, groups, or entities that have not previously engaged with one another
The primeiros contatos between the two companies went very well.
Os primeiros contatos entre as duas empresas correram muito bem.
2. In anthropology or science fiction, the first encounter between different civilizations or species
Scientists are studying protocols for primeiros contatos with extraterrestrial life.
Os cientistas estão estudando protocolos para primeiros contatos com vida extraterrestre.