serotonergic /ˌsɛrətəˈnɜːrd͡ʒɪk/adjective 2noun 1forms 1 adjective2 •Containing or releasing serotonin. •Involved in, or capable of modulating activity in, neurotransmission pathways that use serotonin receptor proteins. noun1 •That which is serotonergic. formsserotonergics