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papilionaceous

[puh-pil-ee-uh-ney-shuh s] /pəˌpɪl i əˈneɪ ʃəs/
adjective, Botany
1.
having an irregular corolla shaped somewhat like a butterfly, as the pea and other leguminous plants.
2.
belonging to the family Papilionaceae (Fabaceae), that is often included as part of the Leguminosae.
Origin
1660-1670
1660-70; < Latin pāpiliōn- (stem of pāpiliō) butterfly + -aceous
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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