PACEMAKER By Nugent, Pam M.S. - April 7, 2013 noun. a natural or faux gadget which assists in establishing and preserving specific biological rhythms. PACEMAKER: "Aaron had to have a pacemaker put in his chest when he was only 29 in order to regulate his arrhythmia." Related Psychology Terms ANIMAL CIRCADIAN RHYTHM ACTIVITY CYCLE PHATIC COMMUNICATION SUPRACHIASMATIC NUCLEUS (SCN) PARABIOSIS BIOLOGISM OPTICAL SCANNER OSCILLOSCOPE BIOLOGICAL CLOCK RESTORATIVE ENVIRONMENT Cite this page: Nugent, Pam M.S., "PACEMAKER," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/pacemaker/ (accessed June 27, 2017).