TRAJECTORY By N., Sam M.S. - 130 noun. the chain of positions through which a item passes over time during a motion. TRAJECTORY: "The model's trajectory is askew is comparison to the width of the runway." Related Psychology Terms Ethics and Boundary Issues About PsychologyDictionary.org TRAJECTORIES OF DYING ADOLESCENCE (Theories) DREAM-STATE (D-STATE, REM- STATE) Counselor's Role in Emergency Teams EQUILIBRIUM (Labyrinthine Sense; Vestibular Sense) Selecting a Diagnosis Crisis Diagnosis and Intervention PART-OBJECT Cite this page: N., Sam M.S., "TRAJECTORY," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/trajectory/ (accessed June 27, 2022).