1. To lengthen the time allowed for finishing a task, project, or deadline
The client requested to extend completion of the project by two weeks.
O cliente solicitou prorrogar a conclusão do projeto por duas semanas.
2. To delay the finishing date of a work or assignment
We need to extend completion due to unforeseen circumstances.
Precisamos estender o prazo de conclusão devido a circunstâncias imprevistas.