endosymbiont

noun
en·​do·​sym·​bi·​ont | \ ˌen-dō-ˈsim-ˌbī-ˌänt How to pronounce endosymbiont (audio) , -bē- How to pronounce endosymbiont (audio) \
variants: also endosymbiote \ -​ˌōt How to pronounce endosymbiote (audio) \

Medical Definition of endosymbiont

: a symbiotic organism living within the body of its partner

Comments on endosymbiont

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

WORD OF THE DAY

not being in agreement or harmony

Get Word of the Day daily email!

Test Your Vocabulary

Confusing Words—A Quiz

  • alice with tweedle dee and tweedle dum
  • I invented a brand new toaster robot and ______ it "Sir Toasts-a-Lot."
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!