Noun order opuntiales has 1 sense
  1. Opuntiales, order Opuntiales - coextensive with the family Cactaceae: cactuses
    --1 is a kind of plant order
    --1 is a member of Caryophyllidae, subclass Caryophyllidae
    --1 has members: Cactaceae, family Cactaceae, cactus family
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