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Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected.
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.]

com·men′sal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adv.1.commensally - in a commensal manner
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References in periodicals archive ?
Lowenstam (1989) speculated that this may deter invertebrates known to live commensally with other ascidians; it was ineffective against the amphipod and polychaete inside our specimens.
Actinomyces is a bacterium that resides commensally on mucosal surfaces of the oral, gastrointestinal, and genital tracts.
Advances have been made in understanding PV associated with pathogenic and commensally bacteria that yield important implications in understanding health and disease.1,2-9
Escherichia coli O157:H7 is an important foodborne pathogen that lives commensally in the rumen of cattle and other food animals such as sheep and goat [1-5].
Plague was introduced to California in 1900 (1,4-6), where over the next 25 years it caused occasional outbreaks in rats commensally residing with humans in urban areas (2,4,6).
If the patient is clinically stable and healthy, they suggested it was reasonable to forego treatment because the organism can occur commensally. If, however, the patient is symptomatic, particularly with prominent dysphagia or substernal burning, treatment with a proton pump inhibitor and a prokinetic was indicated.
Enterobacteriacae can pass on their resistance genes to pathogenic bacteria that become refractory to conventional treatments despite being commensally flora [15, 1].