Noun wolffia has 1 sense
  1. Wolffia, genus Wolffia - minute rootless aquatic herbs having globular fronds floating on or near the water surface and bearing one flower per frond
    --1 is a kind of monocot genus, liliopsid genus
    --1 is a member of Lemnaceae, family Lemnaceae, duckweed family
    --1 has members: watermeal
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