1. Members who replace or stand in for regular members in an organization, assembly, or team, typically when the primary members are absent or unable to serve
The substitute members attended the council meeting in place of the regular representatives.
Os membros substitutos compareceram à reunião do conselho no lugar dos representantes regulares.
2. Alternate representatives designated to fill vacancies or provide backup support
Each committee has designated substitute members who can take over if needed.
Cada comissão tem membros substitutos designados que podem assumir se necessário.