Definition of Antigonon
: a genus of tropical American tendril-climbing herbs (family Polygonaceae) having apetalous flowers with brightly colored petaloid sepals — see coralvine
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Origin and Etymology of antigonon
New Latin, from Greek anti- similar to, like (from anti against, instead of, equivalent to) + -gonon, from polygonon knotgrass (Polygonum aviculare)
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