D defs.my
Entry 1 sense Webster, 1913

Piperonal

· Pip·er·o·nal · IPA
01 n. A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.
  1. 1.
    A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.(Chem.)