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Definition of Genus Dioon
1. Noun. Small genus of arborescent cycads of Mexico and Central America; sometimes classified in family Cycadaceae.
Generic synonyms: Gymnosperm Genus
Group relationships: Family Zamiaceae, Zamia Family, Zamiaceae
Member holonyms: Dioon
Group relationships: Family Zamiaceae, Zamia Family, Zamiaceae
Member holonyms: Dioon