What does poikilothermy mean?
Poikilothermy refers to the ability of certain animals, such as reptiles and amphibians, to regulate their body temperature using external sources, like sunlight or a warm rock, rather than generating heat internally. This property allows them to conserve energy, but also makes them more vulnerable to environmental changes. Poikilothermy is often contrasted with homeothermy, which is the ability to maintain a constant body temperature. Understanding poikilothermy is essential for studying animal physiology, ecology, and evolution. The term is commonly used in biology, zoology, and physiology.
nounThe condition of having a body temperature that varies with the environment, typical of reptiles and other non-mammalian animals.
- The property of having a variable body temperature
"The snake's poikilothermy allowed it to conserve energy in the cold desert night."
"The study of poikilothermy has led to insights into animal physiology and ecology."
"Poikilothermy is a key adaptation for many desert-dwelling animals."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of poikilothermy
The term 'poikilothermy' comes from the Greek words 'poikilos', meaning 'varied' or 'different', and 'thermos', meaning 'heat'. It was first used in the late 19th century to describe the temperature regulation mechanisms of certain animals.
How poikilothermy is actually used
Formal or technical contexts, often used in biology, zoology, or physiology.