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[kohld-bluhd-id] /ˈkoʊldˈblʌd ɪd/

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.
having or showing a lack of feeling or pity: a 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 surroundings Technical term poikilothermic

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.
Having a body temperature that changes according to the temperature of the surroundings. Fish, amphibians, and reptiles are cold-blooded.


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


Read Also:

  • Cold-blooded animals

    Animals, such as reptiles, fishes, and amphibians, that cannot control their body temperature and therefore become sluggish in cold weather. (Compare warm-blooded animals.) Note: Cold-blooded animals are often seen sunning themselves to warm up.

  • Cold-call

    noun 1. a visit or telephone call to a prospective customer without an appointment or a previous introduction. noun 1. a call made by a salesman on a potential customer without making an appointment verb 2. to call on (a potential customer) without making an appointment noun : Canvassing is the equivalent of cold calls […]

  • Cold-cash

    noun 1. money immediately available: They will accept payment in cold cash only. noun phrase Unmistakably valid money, as distinct from checks, promises, etc; Hard Cash: The place wants payment in cold cash, nothing less [1884+; fr the notion that definite and inalterable things, like gold and silver coins, are cold and hard] Also, hard […]

  • Cold-cathode

    noun, Electronics. 1. a cathode, in an electron tube (cold-cathode tube) or lamp, that emits electrons without having to be heated. noun 1. (electronics) a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface

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