Com*men"sal (?), n. [LL. commensalis; L. com- + mensa table: cf. F. commensal. Cf. Mensal.] 1. One who eats at the same table. [Obs.]

2. (Zoöl.) An animal, not truly parasitic, which lives in, with, or on, another, partaking usually of the same food. Both species may be benefited by the association.

Com*men"sal (?), a. Having the character of a commensal.