Cold-blooded



[kohld-bluhd-id] /ˈkoʊldˈblʌd ɪd/

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.
adjective
1.
having or showing a lack of feeling or pity: a cold-blooded killing
2.
(informal) particularly sensitive to cold
3.
(of all animals except birds and mammals) having a body temperature that varies with that of the surroundings Technical term poikilothermic
adj.

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.

cold-blooded adj.
Ectothermic.
cold-blooded
(kōld’blŭd’ĭd)
Having a body temperature that changes according to the temperature of the surroundings. Fish, amphibians, and reptiles are cold-blooded.

adjective

Absolutely first-rate; the very best; zero cool (1960s+ Black teenagers)

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