1. to prevent someone from taking part in an activity, event, or group
The committee decided to exclude participation from those who failed the preliminary exam.
O comitê decidiu excluir a participação daqueles que falharam no exame preliminar.
2. to deny someone the right or opportunity to participate
New regulations exclude participation of foreign investors in this sector.
Novas regulamentações excluem a participação de investidores estrangeiros neste setor.