1. the curved paths followed by objects moving through space, especially projectiles
Usage: physics; ballistics
2. the courses of development or progress of something over time
Usage: figurative

Examples

• The missile followed a parabolic trajectory toward its target.
• Scientists calculated the trajectories of the asteroids approaching Earth.
• The basketball’s trajectory was perfect for a three-point shot.
• Her career trajectory has been consistently upward.
• The company’s growth trajectory exceeded all expectations.
• Economic analysts study the trajectories of market trends.
• The trajectories of the two satellites will intersect tomorrow.