commensal

(kə-mĕn'səl)
adj.
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.

[Middle English, sharing a meal, from Medieval Latin commēnsālis : Latin com-, com- + Latin mēnsa, table.]

commensally com·men'sal·ly adv.

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(kə-mĕn'səl)
adj.

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.

1. describing either of two different species of organism that live in close physical association with benefit to one partner but with little effect — either beneficial or harmful — on the other partner.
2. any organism in a commensal association. Compare symbiosis.

—commensalism n.

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1. living on or within another organism, and deriving benefit without harming or benefiting the host individual.
2. a parasitic organism that causes no harm to the host.

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