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papilionaceous

[ puh-pil-ee-uh-ney-shuhs ]
/ pəˌpɪl i əˈneɪ ʃəs /
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adjective Botany.

having an irregular corolla shaped somewhat like a butterfly, as the pea and other leguminous plants.
belonging to the family Papilionaceae (Fabaceae), that is often included as part of the Leguminosae.

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Origin of papilionaceous

1660–70; <Latin pāpiliōn- (stem of pāpiliō) butterfly + -aceous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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