Definition of symbiosis noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌsɪmbaɪˈəʊsɪs//
    ; NAmE NAmE//ˌsɪmbaɪˈoʊsɪs//
    [uncountable, countable] (pl. symbioses
    BrE BrE//ˌsɪmbaɪˈəʊsiːz//
    ; NAmE NAmE//ˌsɪmbaɪˈoʊsiːz//
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  1. 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. 2a relationship between people, companies, etc. that is to the advantage of both She imagined us living in a perfect mother and daughter symbiosis.
  3. Word Originlate 19th cent.: modern Latin, from Greek sumbiōsis ‘a living together’, from sumbioun ‘live together’, from sumbios ‘companion’.
See the Oxford Advanced American Dictionary entry: symbiosis