1. An unexpected and unplanned event or occurrence, typically one that results in damage, injury, or loss
There was a car accident on the highway this morning.
Houve um acidente de carro na rodovia esta manhã.
2. In music, a symbol (sharp, flat, or natural) that temporarily alters the pitch of a note
The composer added several accidentals to the score.
O compositor adicionou vários acidentes à partitura.
3. A property or quality that is not essential to the nature of something; a non-essential attribute
The color of the car is an accident, not a defining characteristic.
A cor do carro é um acidente, não uma característica definidora.