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Webster's 1913 Dictionary

PIPERIDINE

PIPERIDINE Pi *per "i *dine, n. (Chem. )

Defn: An oily liquid alkaloid, C5H11N, having a hot, peppery, ammoniacal odor. It is related to pyridine, and is obtained by the decomposition of piperine.

New American Oxford Dictionary

piperidine

pi per i dine |piˈperiˌdēn, pipˈərə -pəˈpɛrəˌdin | ▶noun Chemistry a peppery-smelling liquid formed by the reduction of pyridine. [Chem. formula: C 5 H 11 N. ] ORIGIN mid 19th cent.: from Latin piper ‘pepper ’ + -ide + -ine 4 .

Oxford Dictionary

piperidine

piperidine |pɪˈpɛrɪdiːn, pʌɪ -| ▶noun [ mass noun ] Chemistry a peppery-smelling liquid formed by the reduction of pyridine. ●Chem. formula: C 5 H 11 N. ORIGIN mid 19th cent.: from Latin piper ‘pepper ’ + -ide + -ine 4 .