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ectotherm
 

Definitions from WordNet

Noun ectotherm has 1 sense
  1. poikilotherm, ectotherm - an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals
    --1 is a kind of animal, animate being, beast, brute, creature, fauna

Definitions from the Web

Ectotherm

Noun

Definition: An organism that relies on external sources of heat to regulate its body temperature

Example Sentence: The lizard is an ectotherm because it basks in the sun to warm its body.

Adjective

Definition: Referring to an organism that regulates its body temperature by external means

Example Sentence: Reptiles are ectothermic creatures that cannot maintain a constant internal body temperature.

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