Esophageal cancer describes the disease where cells that line the esophagus change or mutate and become malignant. These cells grow out of control and form a mass or tumor. There are two main types of esophageal cancer:
Trajectory. A trajectory is the path that a moving object follows through space as a function of time. The object might be a projectile or a satellite, for example. It thus includes the meaning of orbitâthe path of a planet, an asteroid or a comet as it travels around a central mass.
Save. trajectory /trÉËÊ¤ÉktÉri/ noun. plural trajectories. trajectory. /trÉËÊ¤ÉktÉri/. noun. plural trajectories. Learner's definition of TRAJECTORY. [count]. : the curved path along which something (such as a rocket) moves through the air or through space. â often used figuratively to describe a process of change or development that leads toward a particular result. the trajectory of the missile. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. Her early education put her on a trajectory toward a distinguished career.