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exacum

noun ex·a·cum \ ˈeksəkəm \
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Definition of exacum

1 capitalized : a genus of tropical Asiatic and African plants (family Gentianaceae) including one species (E. affine) of herbaceous biennials with bluish to dark lavender flowers that are often cultivated in the greenhouse
2 plural -s : any plant of the genus Exacum

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Origin and Etymology of exacum

New Latin, from Latin, a kind of centaury, from Gaulish

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