epiphyllum

noun
ep·​i·​phyl·​lum | \ ˌepəˈfiləm\

Definition of epiphyllum

1 capitalized : a small genus of tropical American cacti having flattened jointed irregularly branching stems and showy tubular flowers — see orchid cactus
2 plural -s : any plant of the genus Epiphyllum especially : crab cactus

History and Etymology for epiphyllum

New Latin, from epi- + -phyllum

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