Divergence
Divergence is where a main presynaptic neuron splits its neurotransmitter to affect a large number of postsynaptic neurons.
We can see here how one presynaptic neuron is firing its neurotransmitter which branches off in different direction to affect a few different postsynaptic neurons.
Perron J, Dodd J (2011) Inductive specification and axonal orientation of spinal neurons mediated by divergent bone morphogenetic protein signaling pathways, [research article] 6:36, Available through http://www.neuraldevelopment.com/ [Accessed 29 November 2012]