1. An unexpected or uncommon path, course, or development of something over time
His career took an unusual trajectory, moving from engineering to art.
Sua carreira seguiu uma trajetória inusitada, passando de engenharia para arte.
2. In physics, a path of motion that deviates significantly from the expected or normal course
The meteor followed an unusual trajectory through the atmosphere.
O meteoro seguiu uma trajetória inusitada pela atmosfera.