DECELERATION By N., Pam M.S. - April 7, 2013 Decreasing the speed of an object. See acceleration. DECELERATION: "The car underwent deceleration when Joe braked." Related Psychology Terms ACCELERATION FORCES ORTHOKINESIS MODAFINIL ATTENDING TACTILE FORM RECOGNITION BAD OBJECT EVALUATIVE SEMANTIC PRIMING MEASURE OF ATTI INVARIANT FEATURE GOOD OBJECT THRESHOLD FOR BODILY MOTION Cite this page: N., Pam M.S., "DECELERATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/deceleration/ (accessed September 27, 2020).