1. The standard or default operating state of a device, system, or application
The phone is in normal mode, not airplane mode.
O telefone está em modo normal, não em modo avião.
2. In physics and engineering, a characteristic pattern of motion or oscillation in a system
The vibrating string has multiple normal modes of oscillation.
A corda vibrante tem múltiplos modos normais de oscilação.
3. The typical or conventional way of doing something
We operate in normal mode during business hours.
Operamos em modo normal durante o horário comercial.