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Related to açaí palm: acai fruit
a·ça·í palm(ä-sä-ē′) or as·sai palm (ä-sī′)
1. A tall slender palm (Euterpe oleracea) found in coastal and lowland regions in northern South America. It is harvested for hearts of palm, and its small purple fruits are processed into juice and nutritional supplements.
2. Any of several other South American palms of the genus Euterpe.
[Portuguese açaí, from Tupí *ïwasai.]