Jisho

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Noun
1. poikilothermSee also 恒温動物, See also 冷血動物, See also 温血動物
Wikipedia definition
2. PoikilothermA poikilotherm is an organism whose internal temperature varies considerably. It is the opposite of a homeotherm, an organism which maintains thermal homeostasis. Usually the variation is a consequence of variation in the ambient environmental temperature. Many terrestrial ectotherms are poikilothermic. However some ectotherms remain in temperature-constant environments to the point that they are actually able to maintain a constant internal temperature.
Read “Poikilotherm” on English Wikipedia
Read “変温動物” on Japanese Wikipedia
Read “Poikilotherm” on DBpedia

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