Meaning of commensal

com•men•sal

Pronunciation: (ku-men'sul), [key]
— adj.
  1. eating together at the same table.
  2. (of an animal, plant, fungus, etc.) living with, on, or in another, without injury to either.
  3. (of a person or group) not competing while residing in or occupying the same area as another individual or group having independent or different values or customs.
—n.
  1. a companion at table.
  2. a commensal organism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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