(ˌpærəˌsɪmbɪˈəʊsɪs; ˌpærəˌsɪmbaɪˈəʊsɪs) n, pl-ses (-siːz) (Biology) the symbiotic relationship that occurs between certain species of fungi and lichens (which are themselves symbiotic associations between a fungus and an alga)ˌparaˈsymbiontnˌparaˌsymbiˈoticadj
parasymbiosis
parasymbiosis
living together without either mutual benefit or disadvantage.