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[wawrm-bluhd-id] /ˈwɔrmˈblʌd ɪd/
Also, endothermic. designating or pertaining to animals, as mammals and birds, whose blood ranges in temperatures from about 98° to 112°F (37° to 44°C) and remains relatively constant, irrespective of the temperature of the surrounding medium; homoiothermal.
ardent, impetuous, or passionate:
young and warm-blooded valor.
Origin of warm-blooded
Related forms
warm-bloodedness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for warm-blooded
  • Some live exclusively on warm-blooded animals, on mammals, or birds.
  • Outside of the lab, nothing is quite so miserable for a warm-blooded creature as a polar winter.
  • Block is among the world's leading experts on warm-blooded ocean fish- tuna, mackerel sharks and billfishes such as marlin.
  • Both tunas and billfishes are among a handful of fish that are partially warm-blooded.
  • The machine inside the box is supposed to register the flow of heat coming off the warm-blooded dolphins.
  • He argued that they may have even been warm-blooded.
  • Giant reptiles that ruled dinosaur-era seas might have been warm-blooded, a new study says.
  • It's one clue that they may have evolved an advanced, warm-blooded physiology similar to birds and mammals.
  • Leopard seals are the only known seals to regularly hunt warm-blooded prey.
  • They are the only seal known to hunt other warm-blooded animals.
British Dictionary definitions for warm-blooded


ardent, impetuous, or passionate
(of birds and mammals) having a constant body temperature, usually higher than the temperature of the surroundings Technical name homoiothermic
Derived Forms
warm-bloodedness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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warm-blooded in Medicine

warm-blooded adj.
Maintaining a relatively constant and warm body temperature independent of environmental temperature; homeothermic.

warm'-blood'ed·ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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warm-blooded in Science
Having a relatively warm body temperature that stays about the same regardless of changes in the temperature of the surroundings. Birds and mammals are warm-blooded.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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