Definition of symbiont in English:

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Pronunciation: /ˈsimbīänt/


Either of two organisms that live in symbiosis with one another.
Example sentences
  • Some organisms have enlisted symbionts to provide traits or functions found in other kingdoms.
  • Also unknown is whether chemicals that function as signals, rather than as nutrients, pass from the symbionts to the host organism.
  • An association between mitochondria and intracellular symbionts has already been documented for other symbiotic bacteria that manipulate host reproduction.


Late 19th century: formed irregularly from Greek sumbiōn 'living together', present participle of sumbioun (see symbiosis).

For editors and proofreaders

Syllabification: sym·bi·ont

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