ectotherm

== English == === Etymology === From ecto- +‎ -therm. === Noun === ectotherm (plural ectotherms) (biology) A cold-blooded animal: one, such as an amphibian, fish, reptile, or arthropod, which has a limited ability to regulate its body temperature and whose body temperature thus depends on the ambient temperature. Synonym: poikilotherm Antonyms: endotherm, homeotherm, homoeotherm, homoiotherm, homotherm ==== Derived terms ==== ==== Translations ====