noun. a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses.
1. Noun, singular or mass These transmitters are also known as adrenaline and noradrenaline. 2. Adjective Indeed, no other antidepressant increases both noradrenaline and dopamine, which may explain bupropion’s unique weight-related effects.