warm-blooded

[ wawrm-bluhd-id ]

adjective

1. Also 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.
2. ardent, impetuous, or passionate:

   young and warm-blooded valor.

warm-blooded

adjective

1. ardent, impetuous, or passionate
2. (of birds and mammals) having a constant body temperature, usually higher than the temperature of the surroundings Technical namehomoiothermic

warm-blooded

/ wôrm′blŭd′ĭd /

1. 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.

Derived Forms

• ˌwarm-ˈbloodedness, noun

Other Words From

• warm-blooded·ness noun

Word History and Origins

Origin of warm-blooded¹

First recorded in 1785–95

Example Sentences

Now, a new study estimates that the first warm-blooded dinosaurs may have roamed the Earth about 180 million years ago, about halfway through the creatures’ time on the planet.

From Seattle Times

According to the report, ectotherms, or cold-blooded animals, are approximately 90% more energy efficient than warm-blooded animals and, in the context of agriculture, “this energy differential readily translates into a potential for higher production efficiency.”

From Salon

However, in a first-of-its-kind study of "warm-blooded" endotherms, a University of Illinois Urbana-Champaign team found tropical birds can handle thermal variation just fine.

From Science Daily

When infrared light -- such as that emitted by warm-blooded animals -- strikes one of these nanotube-polymer hybrids, it would generate an electric signal.

From Science Daily

For her doctorate at TUM, she studied the degree of similarity between the mechanisms for regulating body temperature used by cold-blooded animals and their warm-blooded counterparts such as humans.

From Science Daily