- 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.
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. 2018
Examples from the Web for papilionaceous
The caterpillars live on the pea and other papilionaceous plants.Our Common Insects
Alpheus Spring Packard
They have been called Mouches papilionaces, or Papilionaceous Flies.The Insect World
I opened some, and found them of a papilionaceous structure.Lachesis Lapponica
Carl von Linn
Trees or Shrubs with papilionaceous corolla; as the laburnum.Lives of Eminent Zoologists, from Aristotle to Linnus
Ala (plural, al), a wing; the side-petals of a papilionaceous corolla, 92.The Elements of Botany