Chemistry Characterized by or causing the absorption of heat; endoergic.
Biology Of or relating to an organism that generates heat to maintain its body temperature, typically above the temperature of its surroundings; warm-blooded.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.