tri·pel·en·na·mine noun \ˌtrī-pe-ˈlen-ə-ˌmēn, -mən\
: an antihistamine drug derived from pyridine and ethylenediamine and used in the form of its crystalline citrate C16H21N3·C6H8O7 or hydrochloride C16H21N3·HCl—see pyribenzamine
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