Definition of Branchiobdella
: a genus (the type of the family Branchiobdellidae) of small annelid worms that live on the gills and surface of crayfishes, have the posterior end modified into an adhesive sucker, and are now usually considered to form with a few related forms a superfamily of Oligochaeta though formerly regarded as modified leeches
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Origin and Etymology of branchiobdella
New Latin, from branchi- + Greek bdella leech
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