1. The last date or time by which something must be completed or submitted; the ultimate deadline that cannot be extended
The final deadline for submitting your applications is December 31st.
O prazo final para enviar suas inscrições é 31 de dezembro.
2. An absolute cutoff point in a process, beyond which no further submissions or extensions are allowed
We have set a final deadline of 5 PM on Friday for all project deliverables.
Estabelecemos um prazo final de 17h na sexta-feira para todas as entregas do projeto.