from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Zoology Maintaining a relatively constant and warm body temperature independent of environmental temperature; homeothermic.
  • adj. Ardent; passionate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. maintaining a relatively constant and warm body temperature, regardless of the ambient temperature
  • adj. passionate

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having warm blood; -- applied especially to those animals, as birds and mammals, which have warm blood, or, more properly, the power of maintaining a nearly uniform temperature whatever the temperature of the surrounding air. See homoiothermal.

from The Century Dictionary and Cyclopedia

  • Having warm blood: hematothermal: in zoölogy and physiology noting mammals and birds whose blood ranges in temperature from 98° to 112° F., in consequence of the complete double blood-circulation, and the oxygenation or combustion which goes on in the lungs: opposed to cold-blooded or hematocryal.
  • Figuratively, characterized by high temper and generous impulses; warm-hearted; also, passionate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. having warm blood (in animals whose body temperature is internally regulated)


From warm + blood + -ed. (Wiktionary)


  • Thus, _All fish are cold-blooded_, ∴ _some cold-blooded things are fish: _ this is a sound inference by the mere manner of expression; and equally sound is the inference, _All fish are warm-blooded_, ∴ _some warm-blooded things are fish_.

    Logic Deductive and Inductive

  • Better they give their lives for the glory of our race than ever bow and call warm-blooded vermin ‘master.’


  • Everything we learned in school was wrong -- now maybe dinosaurs were warm-blooded.

    Pretty Clock (link roundup)

  • The most adroit panderer among leading Republican hopefuls has to be Mike Huckabee, who is apparently an actual, warm-blooded human.

    Michael Sigman: Pander-monium Breaks Out Among 2012 GOP Hopefuls

  • Fans of the warm-blooded guys don't need to worry though since there seems to be plenty of shirtless Jason (Ryan Kwanten) and Alcide (Joe Manganiello) coming up, too.

    True Blood Trailer: First Look at Season 4

  • So, like any other warm-blooded lustful man would do, I went to the Intertubeywebs and looked on IMDB. COM.

    2009 December « Monster Scifi Show Blog

  • The Archaeopteryx was warm-blooded, about the size of a dove.

    Modern Science in the Bible

  • From the start, for the audience, there is a question about focus and whether our eyes will be fixed on the puppets or stray to the puppeteers where the warm-blooded life is.

    Or You Could Kiss Me – review

  • My favorite panel was "What's New in the World of Dinosaurs," wherein we got to talk about Sauropelta and Nyctosaurus and Kentrosaurus and thagomizers and Pterodaustro and how T-rexes lack nasal bones called turbinates (which 99% of living warm-blooded animals have).

    Flowers' Progress, week 9

  • Barack Obama is different, not a political practitioner, really, but something else, and not a warm-blooded animal but a cool, chill character, a fish who sits deep in the tank and stares, stilly, at the other fish.

    Obama and the Debt Crisis

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