coldblooded

cold-blooded

[kohld-bluhd-id]
adjective
1.
designating or pertaining to animals, as fishes and reptiles, whose blood temperature ranges from the freezing point upward, in accordance with the temperature of the surrounding medium; poikilothermic.
2.
without emotion or feeling; dispassionate; cruel: a cold-blooded murder.
3.
sensitive to cold.

Origin:
1585–95

cold-bloodedly, adverb
cold-bloodedness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cold-blooded
 
adj
1.  having or showing a lack of feeling or pity: a cold-blooded killing
2.  informal particularly sensitive to cold
3.  poikilothermic (of all animals except birds and mammals) having a body temperature that varies with that of the surroundings
 
cold-'bloodedly
 
adv
 
cold-'bloodedness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

cold-blooded adj.
Ectothermic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cold-blooded   (kōld'blŭd'ĭd)  Pronunciation Key 
Having a body temperature that changes according to the temperature of the surroundings. Fish, amphibians, and reptiles are cold-blooded.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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