[ ˌsɪmbɪ'əʊsɪs , -bʌɪ- ]
■ noun ( plural symbioses -si:z ) Biology an interaction between two different organisms living in close physical association, especially to the advantage of both.
Derivatives
symbiotic -'ɒtɪk adjective
symbiotically adverb
Origin
C19: mod. L., from Gk sumbiōsis 'a living together', from sumbioun 'live together', from sumbios 'companion'.