commensalism

commensalism definition - medical

com·men·sal·ism (kə-mĕnˈsə-lĭzˌəm)

noun
A symbiotic relationship in which one organism derives benefit and the other is unharmed.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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