Noun actinia has 2 senses
  1. Actinia, genus Actinia - a genus of sea anemone common in rock pools
    --1 is a kind of coelenterate genus
    --1 is a member of Actiniaria, order Actiniaria, Actinaria, order Actinaria
  2. actinia, actinian, actiniarian - any sea anemone or related animal
    --2 is a kind of sea anemone, anemone
    --2 is a member of Actiniaria, order Actiniaria, Actinaria, order Actinaria
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