symbiosis | ˌsɪmbɪˈəʊsɪs, ˌsɪmbʌɪˈəʊsɪs | noun (plural symbioses | ˌsɪmbɪˈəʊsiːz, ˌsɪmbʌɪˈəʊsiːz | ) [mass noun ] Biology interaction between two different organisms living in close physical association, typically to the advantage of both. Compare with antibiosis.• [count noun ] a mutually beneficial relationship between different people or groups: a perfect mother and daughter symbiosis. ORIGIN late 19th century: modern Latin, from Greek sumbiōsis ‘a living together’, from sumbioun ‘live together’, from sumbios ‘companion’.
[Apple Dictionary]