|1.||(of two different species of plant or animal) living in close association, such that one species benefits without harming the other|
|2.||rare of or relating to eating together, esp at the same table: commensal pleasures|
|3.||a commensal plant or animal|
|4.||rare a companion at table|
|[C14: from Medieval Latin commensālis, from Latin com- together + mensa table]|
commensal com·men·sal (kə-měn'səl)
Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected. n.
An organism participating in a symbiotic relationship in which one species derives some benefit while the other is unaffected.