Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

ectotherm

play
noun ec·to·therm \ˈek-tə-ˌthərm\

Definition of ectotherm

  1. :  a cold-blooded animal :  poikilotherm

ectothermic play \ˌek-tə-ˈthər-mik\ adjective


1940

First Known Use of ectotherm

1940


Medical Dictionary

ectotherm

play
noun ec·to·therm \ˈek-tə-ˌthərm\

Medical Definition of ectotherm

  1. :  a cold-blooded animal :  poikilotherm

ectothermic \ˌek-tə-ˈthər-mik\play adjective



Learn More about ectotherm

  1. Medical Dictionary: Definition of "ectotherm"


Seen and Heard

What made you want to look up ectotherm? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

soothe disapprove reduce perplex
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ