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An organism that generates heat to maintain its body temperature, typically above the temperature of its surroundings.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Zoology) an animal with warm blood
2. (Chemistry) chem the heat absorbed during a chemical reaction
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɛn dəˌθɜrm)

a warm-blooded animal.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Melting peak maximum ([T.sub.p]) and all the melt endotherms presented in this work, if not specified, are from the second heating cycle.
The researchers used red flour beetles to test sensitivity to temperature in coldblooded ectotherms, species that don't regulate their own body temperature, in contrast to endotherms, such as humans.
'Rolland explained that animals that can regulate their body temperatures, known as endotherms, might be better able to survive in these places because they can keep their embryos warm, take care of their offspring and they can migrate or hibernate.
In the [alpha]L x [H.sub.2]O obtained at 27[degrees]C (Figure 6(a)), three distinctive endotherms were observed at 145, 185, and 210[degrees]C.
ulcerans known to cause BU in humans and other mycolactone-producing mycobacteria strains that contain IS2404 but have fewer copy numbers of IS2606 and are not known to cause disease in endotherms. Thus, DNA in bandicoot feces could be attributed to the M.
Energetic demands are roughly an order of magnitude greater in endotherms relative to ectotherms of the same size (e.g., Humphreys, 1979; Bennet and Ruben, 1979; Hayes, 2010; recently reviewed by Glazier, 2014).
Figure 5 shows the melting endotherms of polymer electrolyte systems.
For DSC, the heat given off during a reaction was called an exotherm while the heat absorbed by material is called an endotherm. By measuring the exotherms and endotherms, it is possible to determine all the chemical and physical state changes that occurred in the sample.
But biologists have found exceptions called regional endotherms, which can maintain warmth in certain tissues.
Warm blooded endotherms are capable of maintaining a steady balance in body temperature through their own metabolism.
Thermoanalysis of the polymer revealed a glass transition temperature [T.sub.g] of 4.3[degrees]C, a cold crystallization point [T.sub.c] at 67.2[degrees]C, and two melting endotherms [T.sub.m1] and [T.sub.m2] at 130.2 and 140.6[degrees]C.