from The American Heritage® Dictionary of the English Language, 4th Edition
- 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. of a form of symbiosis in which one organism derives a benefit while the other is unaffected
- n. An organism partaking in a commensal relationship.
from the GNU version of the Collaborative International Dictionary of English
- n. One who eats at the same table.
- n. 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.
- adj. Having the character of a commensal.
from The Century Dictionary and Cyclopedia
- Eating together at the same table.
- In zoology and botany, living with as a tenant or coinhabitant, but not as a parasite; inquiline. See II., 2.
- n. One who eats at the same table with another or others.
- n. In zoology and botany, one of two animals or plants which live together, but neither at the expense of the other; an animal or a plant as a tenant, but not a true parasite, of another; an inquiline.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. either of two different animal or plant species living in close association but not interdependent
- adj. living in a state of commensalism
Middle English, sharing a meal, from Medieval Latin commēnsālis : Latin com-, com- + Latin mēnsa, table.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Medieval Latin commensalis. (Wiktionary)