Word.ws English Dictionary

ectotherm

ectotherm noun: a cold-blooded animal: one, such as an amphibian, fish, reptile, or arthropod, which has a limited ability to regulate its body temperature and whose body temperature thus depends on the ambient temperature.

Noun

ectotherm (plural ectotherms)

  1. A cold-blooded animal: one, such as an amphibian, fish, reptile, or arthropod, which has a limited ability to regulate its body temperature and whose body temperature thus depends on the ambient temperature.
    Synonyms:
    poikilotherm

Synonyms of ectotherm

Antonyms

Forms of ectotherm

pluralectotherms

Origin of ectotherm

From ecto- + -therm.

Words formed from ectotherm

Questions about ectotherm

What does ectotherm mean?
Ectotherm means a cold-blooded animal: one, such as an amphibian, fish, reptile, or arthropod, which has a limited ability to regulate its body temperature and whose body temperature thus depends on the ambient temperature.
What part of speech is ectotherm?
Ectotherm is a noun.
What is the plural of ectotherm?
The plural of ectotherm is ectotherms.

Words near ectotherm in the dictionary

  1. ectosymbioses
  2. ectosymbiosis
  3. ectosymbiotic
  4. ectoteloblast
  5. ectoteloblasts
  6. ectotherm
  7. ectothermal
  8. ectothermic
  9. ectothermically
  10. ectotherms
  11. ectothermy

Source and license

Adapted from Wiktionary: ectotherm (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “ectotherm.” Word.ws, https://word.ws/ectotherm. Based on Wiktionary, CC BY-SA 4.0.