Definition of symbiont in English:


Line breaks: sym|biont
Pronunciation: /ˈsɪmbɪɒnt
, -bʌɪ-/


  • An organism living in symbiosis with another.
    More 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).

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