Noun cardiidae has 1 sense
  1. Cardiidae, family Cardiidae - somewhat heart-shaped sand-burrowing bivalve mollusks
    --1 is a kind of mollusk family
    --1 is a member of
     Bivalvia, class Bivalvia, Lamellibranchia, class Lamellibranchia, class Pelecypoda
    --1 has members: Cardium, genus Cardium
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