Meaning & use
Symbiont
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An organism that lives in a close, long-term biological relationship with another organism of a different species.
See it in a sentence
The coral relies on a photosynthetic algal symbiont for much of its energy.
Gut bacteria act as symbionts, helping the host digest food in exchange for a stable habitat.
A note on using this word
Symbionts can be mutualistic, commensal, or parasitic, depending on how the relationship affects each partner.
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