Noun aphis has 1 sense
  1. Aphis, genus Aphis - type genus of the Aphididae: injurious to fruit trees and vegetables
    --1 is a kind of arthropod genus
    --1 is a member of Aphididae, family Aphididae
    --1 has members:
     apple aphid, green apple aphid, Aphis pomi; blackfly, bean aphid, Aphis fabae
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