Standard Lemma guide

ectothermic

adj · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 1

Of or relating to an ectotherm; having a body temperature that varies depending on the outside temperature.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: cold-blooded, poikilothermic, exothermic

Antonyms: endothermic, warm-blooded

2

adjective satellite

Meaning 2

of animals except birds and mammals; having body temperature that varies with the environment

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: poikilothermic, poikilothermous, heterothermic

Antonyms: none provided

History

Etymology

Etymology tree English ectotherm Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English ectothermic From ectotherm + -ic.

Across languages

Translations

43 source translations are retained for this English entry.

  • Arabic: بَارِد الدَّم (bārid ad-dam) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Belarusian: эктатэрмічны (ektatermičny) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Belarusian: халаднакроўны (xaladnakrówny) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Belarusian: халоднакроўны (xalodnakrowny) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Bulgarian: студенокръвен (studenokrǎven) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Chinese Mandarin: 冷血的 (lěngxuè de) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Danish: koldblodig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Dutch: koudbloedig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Estonian: kõigusoojane — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Estonian: poikilotermne — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Finnish: vaihtolämpöinen — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • French: poïkilotherme — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • French: à sang froid — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Georgian: ცივსისხლიანი (civsisxliani) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • German: wechselwarm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • German: poikiloterm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • German: kaltblütig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Greek: εξωθερμικός (exothermikós) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Greek: ψυχρόαιμος (psychróaimos) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Hungarian: hidegvérű — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Japanese: 冷血の (reiketsu no) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Kazakh: салқын қанды (salqyn qandy) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Korean: 냉혈의 (naenghyeorui) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Latvian: aukstasiņu — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Latvian: poikilotermisks — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Malay: berdarah sejuk — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Malay: berdarah dingin — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Norwegian Bokmål: kaldblodig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Norwegian Bokmål: vekselvarm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Norwegian Nynorsk: kaldblodig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Norwegian Nynorsk: vekselvarm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Polish: zmiennocieplny — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Polish: egzotermiczny — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Portuguese: de sangue frio — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Portuguese: ectotérmico — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Romanian: poichiloterm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Russian: эктоте́рмный (ektotérmnyj) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Russian: холоднокровный (xolodnokrovnyj) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Russian: пойкилотермный (pojkilotermnyj) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Spanish: de sangre fría — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Swedish: växelvarm — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Swedish: kallblodig — of or relating to ectotherm; having an unregulated body temperature — see also endothermic
  • Thai: เลือดเย็น (lʉ̂ʉat-yen) — of or relating to ectotherm; having an unregulated body temperature — see also endothermic