ECTOTHERM By N., Pam M.S. - April 7, 2013 An animal whose body temperature is regulated by the environment. Compare endotherm. ECTOTHERM: "Snakes and some reptiles are ectotherms as they get heat from the environment." Related Psychology Terms ENDOTHERM DEEP BODY TEMPERATURE SOCIOPETAL THERMODE ANIMAL BEHAVIOR THERMAL SENSITIVITY SWEATING BODY TEMPERATURE BEHAVIORAL ECOLOGY THERMORECEPTOR Cite this page: N., Pam M.S., "ECTOTHERM," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/ectotherm/ (accessed January 19, 2021).