1. A part or element of a system, product, or process that lacks something necessary or is below required standards
The deficient component caused the entire machine to malfunction.
O componente deficiente causou o mau funcionamento de toda a máquina.
2. In engineering or manufacturing, a part that fails to meet specifications or quality standards
Quality control identified a deficient component in the production batch.
O controle de qualidade identificou um componente deficiente no lote de produção.