|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-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.