Definition of commensal adjective from the Oxford Advanced American Dictionary

 

commensal

 adjective
adjective
NAmE//kəˈmɛnsl//
 
(biology)
 
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living on another animal or plant and getting food from the situation, but doing no harm commensal organisms
commensalism
 
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NAmE//kəˈmɛnsəˌlɪzəm//
 
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: commensal