Noun genus exacum has 1 sense
  1. Exacum, genus Exacum - genus of tropical Asiatic and African plants: especially Persian violets
    --1 is a kind of dicot genus, magnoliopsid genus
    --1 is a member of Gentianaceae, family Gentianaceae, gentian family
    --1 has members: Persian violet, Exacum affine
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