An anthocyanin (usually isolated as the reddish violet chloride, C₂₈H₃₃O₁₆Cl) that is the colouring matter of red peonies and on hydrolysis gives peonidin and glucose.
Origin
Late 19th century; earliest use found in Harper's Magazine. From peony + -in.
Definition of peonin in US English:
peonin
nounˈpiːənɪn
Chemistry
An anthocyanin (usually isolated as the reddish violet chloride, C₂₈H₃₃O₁₆Cl) that is the colouring matter of red peonies and on hydrolysis gives peonidin and glucose.
Origin
Late 19th century; earliest use found in Harper's Magazine. From peony + -in.