-ergic

  1. a combining form with the meanings “activated by,” “sensitive to,” “releasing,” “resembling the effect produced by” the substance or phenomenon specified by the initial element: dopaminergic.

Origin of -ergic

apparently orig. in adrenergic and cholinergic, probably on the model of allergic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018