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(Plants) any plant of the annual or perennial tropical genus Exacum; some are grown as greenhouse biennials for their bluish-purple platter-shaped flowers: family Gentianaceae
[Latin, a name for centaury, from ex out + agere to drive]
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|Noun||1.||Exacum - genus of tropical Asiatic and African plants: especially Persian violets|
dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
family Gentianaceae, gentian family, Gentianaceae - chiefly herbaceous plants with showy flowers; some are cultivated as ornamentals