What does poikilotherm mean?
Poikilotherm refers to an organism whose internal body temperature varies with the temperature of its environment. This is in contrast to endothermic organisms, which maintain a relatively constant body temperature. Poikilothermic organisms, such as reptiles and amphibians, often rely on external sources of heat to regulate their body temperature. This can be seen in their behavior, such as basking in the sun or seeking shade to avoid overheating. The term poikilotherm is derived from the Greek words 'poikilos,' meaning 'varied,' and 'thermos,' meaning 'heat.' Poikilothermic organisms have evolved to thrive in a wide range of environments, from the freezing cold to the scorching hot. Their ability to adapt to changing temperatures has allowed them to occupy a diverse range of ecological niches. In addition, poikilothermic organisms have been the subject of scientific study, particularly in the fields of ecology and physiology. By understanding how these organisms regulate their body temperature, scientists can gain insights into the complex interactions between organisms and their environment.
noun
An organism whose internal body temperature varies with the temperature of its environment, such as a reptile or amphibian.
- 1. An organism whose internal body temperature varies with the temperature of its environment.
"Many species of fish are poikilothermic, meaning their body temperature changes with the water temperature."
"Many species of fish are poikilothermic, meaning their body temperature changes with the water temperature."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of poikilotherm
The term poikilotherm is derived from the Greek words 'poikilos,' meaning 'varied,' and 'thermos,' meaning 'heat.' This refers to the varied body temperature of poikilothermic organisms, which changes in response to changes in their environment.
Usage notes
Poikilotherm is a formal term used in scientific and academic contexts to describe organisms with variable body temperatures. It is not commonly used in everyday conversation.