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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
First recorded in 1785-95
Related forms
warm-bloodedness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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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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