One of the mysteries of the English language finally explained.
An animal that is dependent on or capable of the internal generation of heat.
- ‘Extant birds are accomplished endotherms and many maintain the highest body temperatures.’
- ‘However, the problem is severe for an endotherm, particularly a small endotherm, which must maintain a steady internal temperature and has a considerably greater demand for respiratory oxygen.’
- ‘For example, display and assessment of potential mates may be less costly for endotherms at higher temperatures than at lower temperatures.’
- ‘Differential expression of seasonal energetic adaptations generates a continuum in the trophic status of endotherms during winter.’
- ‘They are endotherms and they can finely tune the thermal, water, and chemical balance of their bodies from minute to minute.’
1940s: from endo- ‘within’, on the pattern of homeotherm.
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