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Physa vs Physae - What's the difference?

physa | physae |

As nouns the difference between physa and physae

is that physa is (zoology) any of the genus (taxlink) of freshwater snails while physae is .

physa

English

Noun

(en-noun)
  • (zoology) Any of the genus (taxlink) of freshwater snails.
    • (Webster 1913)

    physae

    English

    Noun

    (head)