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WordReference Random House Learner's Dictionary of American English © 2024sym•bi•o•sis /ˌsɪmbiˈoʊsɪs, -baɪ-/USA pronunciation n., pl. -ses /-siz/USA pronunciation .- Ecology[uncountable] the living together of two very different or dissimilar living things, as when one living thing is a parasite or lives off another.
- any relationship that involves dependence between two persons, groups, etc.:[countable]The press and the president have an odd symbiosis: Each may despise the other and yet each depends on the other.
sym•bi•ot•ic /ˌsɪmbiˈɑtɪk/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024sym•bi•o•sis (sim′bē ō′sis, -bī-),USA pronunciation n., pl. -ses (-sēz).USA pronunciation - Ecology[Biol.]
- the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism.
- (formerly) mutualism (def. 1).
- Psychology, Psychiatrya relationship between two people in which each person is dependent upon and receives reinforcement, whether beneficial or detrimental, from the other.
- Psychology, Psychiatrythe relationship between an infant and its mother in which the infant is dependent on the mother both physically and emotionally.
- any interdependent or mutually beneficial relationship between two persons, groups, etc.
- Greek symbíōsis, equivalent. to sym- sym- + biō (variant stem of bioûn to live) + -sis -sis
- 1615–25;
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