- 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.
- without emotion or feeling; dispassionate; cruel: a cold-blooded murder.
- sensitive to cold.
Origin of cold-blooded
Examples from the Web for cold-blooded
But it lacked the one ingredient that has largely been absent from this World Cup: cold-blooded finishing in front of goal.Germany Wins, World Cup Justice Is Served
July 13, 2014
“Show business” was much more a haven for sentimentalists then, not for ironists like Letterman or cold-blooded comics like Leno.From Jack to Johnny to Jay: Saying Goodbye to ‘Tonight’
February 7, 2014
His sentencing is scheduled for this week—but who do you punish when a child becomes a cold-blooded killer?The Week’s Best Longreads for February 16, 2013
February 16, 2013
She allows she does not rank Allaway among the most cold-blooded of killers.What Aurora Victims Might Face if James Holmes Pleaded Insane
August 1, 2012
So Murdoch, cold-blooded and lizard-brained, knows he must preserve his own position while somehow ensuring a peaceful succession.The Murdoch Family Succession Psychodrama
November 24, 2011
He was cold-blooded and generally disliked by the men under him.The Fifth String
John Philip Sousa
I like him tremendously, in spite of his cold-blooded confession, and past record.The Long Voyage
Carl Richard Jacobi
Her innocent little Vada in the arms of this cold-blooded assassin!The Twins of Suffering Creek
Nobody knows that but us three and that cold-blooded fish, Alston Choate.The Prisoner
Is it the turf and its teachings to which this crafty and cold-blooded spirit is owing?Lord Kilgobbin
- having or showing a lack of feeling or pitya cold-blooded killing
- informal particularly sensitive to cold
- (of all animals except birds and mammals) having a body temperature that varies with that of the surroundingsTechnical term: poikilothermic
Word Origin and History for cold-blooded
also cold blooded; 1590s, of persons, "without emotion, unfeeling;" of actions, from 1828. The phrase refers to the old notion that blood temperature rose with excitement. In the literal sense, of reptiles, etc., from c.1600. From cold (adj.) + blood (n.). Related: Cold-bloodedly; cold-bloodedness.
- Having a body temperature that changes according to the temperature of the surroundings. Fish, amphibians, and reptiles are cold-blooded.