-ˌdēn, -_d ə n noun
( -s )
Etymology: International Scientific Vocabulary, blend of piperine and -ide
: a liquid heterocyclic base C 5 H 10 NH having a peppery ammoniacal odor that is obtained usually by hydrolysis of piperine or by reduction of pyridine; hexahydro-pyridine — compare conhydrine , coniine