Definition of hippeastrum
1 capitalized : a genus of tropical American bulbous plants (family Amaryllidaceae) that are widely cultivated for their showy white to crimson flowers and that are sometimes included in the genus Amaryllis
2 plural -s : any amaryllis of the genus Hippeastrum
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Origin and Etymology of hippeastrum
New Latin, from Greek hippeus horseman (from hippos) + astron star; from the equitant leaves and the star-shaped flowers — more at star
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