Definition of Polystoma
:a genus (the type of the family Polystomatidae) of monogenetic trematode worms including several species that occur in the urinary bladder of batrachians
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Polystoma
noun
Po·lys·to·ma
\
pəˈlistəmə
\
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Origin and Etymology of polystoma
New Latin, from Greek polystomos many mouthed, from poly- + -stomos -stomous
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