1. saponin

noun. any of various plant glucosides that form soapy lathers when mixed and agitated with water; used in detergents and foaming agents and emulsifiers.


  • -in (English)
  • sapon- (English)
  • sapo (Latin)

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Example sentences of the word saponin

1. Noun, singular or mass
Hostas don't contain enough saponin to make soap, but they contain enough to make them harmful to dogs by this foaming action.