IPA: //ˈpaɪpərənəl//
KK: /ˈpaɪpərənəl/
A white powder with a sweet, floral smell, often used in flavoring and perfumes.
The perfume was enhanced with a hint of piperonal, giving it a unique floral scent.
Piperonal is derived from "piper" (from Latin *piper*, meaning pepper) and "-onal" (a suffix used in organic chemistry to denote aldehydes). The word refers to a compound related to pepper, specifically an aromatic aldehyde derived from it.
Think of 'pepper' ('piper') to remember that 'piperonal' is a compound related to the aroma of pepper.