'team-backed' originates from the combination of 'team' and 'backed', where 'team' refers to a group of people working together and 'backed' means supported or endorsed.

'team-backed' evolved from the concept of 'backing' or supporting a group effort, eventually becoming a common term in modern English to describe projects or initiatives supported by a team.

Initially, it meant 'supported by a group', and this meaning has largely remained the same in modern usage.