ectotherm

Từ điển Oxford Learners Wordfinder Dictionary

noun

an animal whose body temperature varies with the temperature of its surroundings;
any animal except birds and mammals
• Syn:
poikilotherm
• Derivationally related forms:
poikilothermic (for: poikilotherm), poikilothermous (for: poikilotherm)
• Hypernyms:
animal, animate being, beast, brute, creature, fauna