cold-blooded

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cold-blood·ed • adj. 1. (of a kind of animal) having a body temperature varying with that of the environment; poikilothermic.2. without emotion or pity; deliberately cruel or callous: a cold-blooded murder.DERIVATIVES: cold-blood·ed·ly adv.cold-blood·ed·ness n.

cold-blooded

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cold-blooded See poikilothermic