symbiosis

Universal Words 1 (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. 2 a relationship between people, companies, etc. that is to the advantage of both: She imagined us living in a perfect mother and daughter symbiosis. symbiotic adjective: a symbiotic relationship symbiotically adverb