Noun tridacnidae has 1 sense
  1. Tridacnidae, family Tridacnidae - large marine hard-shell clams
    --1 is a kind of mollusk family
    --1 is a member of
     Bivalvia, class Bivalvia, Lamellibranchia, class Lamellibranchia, class Pelecypoda
    --1 has members: Tridacna, genus Tridacna
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