Cambridge Dictionary
symbiosis
- a close connection between different types of organisms in which they live together and benefit from each other
- a relationship between two types of animal or plant in which each provides for the other the conditions necessary for its continued existence
- a relationship between people or organizations that depend on each other equally
Oxford Dictionary
symbiosis
- (biology) the relationship between two different living creatures that live close together and depend on each other in particular ways, each getting particular benefits from the other; The birds live in symbiosis with the cattle, picking insects from their skin to eat.
- a relationship between people, companies, etc. that is to the advantage of both; She imagined us living in a perfect mother and daughter symbiosis.