Medical Dictionary

proboscis

noun pro·bos·cis \prə-ˈbäs-əs, -kəs\
plural pro·bos·cis·es also pro·bos·ci·des \-ˈbäs-ə-ˌdēz\

Medical Definition of PROBOSCIS

:  any of various elongated or extensible tubular organs or processes especially of the oral region of an invertebrate: as a :  a sucking organ of insects (as houseflies or mosquitoes) that is often also adapted for piercing b :  one of the complex protrusible holdfasts on the scolex of certain tapeworms

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