1. third person singular preterite of 'concluir' - to finish or complete something
He concluded the meeting at 5 PM.
Ele concluiu a reunião às 17h.
2. to reach a decision or determination based on evidence or reasoning
The investigation concluded that he was innocent.
A investigação concluiu que ele era inocente.
3. to end or finish a speech, presentation, or written work
She concluded her speech with a powerful statement.
Ela concluiu seu discurso com uma declaração poderosa.