cecropiaPronunciation: /sɪˈkrəʊpɪə/Definition of cecropia noun 1a fast-growing tropical American tree which is typically among the first to colonize a cleared area. Genus Cecropia, family Cecropiaceae 2 (also cecropia moth) a very large North American silk moth with boldly marked reddish-brown wings. Platysamia (or Hyalophora) cecropia, family Saturniidae Origin: early 19th century: modern Latin, from the name Cecrops, a king of Atticacecropia in other Oxford dictionaries Definition of cecropia in the US English dictionary