PIPERIDINE Meaning of PIPERIDINE in English [ pɪ'pɛrɪdi:n , pʌɪ- ]■ noun Chemistry a peppery-smelling liquid formed by the reduction of pyridine.OriginC19: from L. piper 'pepper' + -ide + -ine 4 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004