Trajectory definition: the curve described by a projectile, rocket, or the like in its flight.. See examples of TRAJECTORY used in a sentence. Definition of trajectory noun from the Oxford Advanced Learner's Dictionary. the curved path of something that has been fired, hit or thrown into the air. (figurative) My career seemed to be on a downward trajectory. Explore the complete meaning of "trajectory" with expert definitions, real-world usage examples, synonyms, antonyms, and visual aids. Perfect for students, writers, and language learners. TRAJECTORY meaning: the curved path along which something (such as a rocket) moves through the air or through space often used figuratively to describe a process of change or development that leads toward a particular result
