noun. A symbiotic relationship between two organisms of different species in which one derives some benefit while the other is unaffected.

noun. Commensal existence or mode of living; the state of being commensal; commensality. Also called symbiosis.

noun. The act of eating together; table fellowship.

noun. A sharing of the same environment by two organisms where one species benefits and the other is unaffected. An example is barnacles on whales.

noun. The act of eating together; table fellowship.

noun. the relation between two different kinds of organisms when one receives benefits from the other without damaging it

"This kind of mutually beneficial external partnership is called commensalism, i.e. eating at the same table.] [Illustration: _P.oto: G.P. Duffus."

interdependence  interdependency  mutuality