Definition of urena
1 capitalized : a small genus of tropical herbs or shrubs (family Malvaceae) having small yellow flowers with five connate bracts, bearing fruit with hooked bristles, yielding a medicinal mucilaginous juice, and including a coarse weedy herb (U. lobata) sometimes cultivated for its fiber which is comparable to jute
2 plural -s a : any plant of the genus Urena (especially U. lobata) b or urena lobata \-lōˈbātə, -bätə\ : the cordage fiber derived from the urena (U. lobata)
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Origin and Etymology of urena
New Latin, from Malayalam uren urena
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