symbiosis
US /ˌsɪm.baɪˈoʊ.sɪs/
UK /ˌsɪm.baɪˈoʊ.sɪs/
1.
a close, long-term interaction between two different biological organisms, in which both benefit from the association
:
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The clownfish and the sea anemone live in a perfect example of symbiosis.
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Lichens are a classic case of symbiosis between a fungus and an alga.
2.
a mutually beneficial relationship between different people or groups
:
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There was a true symbiosis between the artist and the patron.
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The collaboration created a powerful symbiosis of ideas.