Convergence

 Convergence is when a many presynaptic neurons provide its neurotransmitter to a single postsynaptic neuron^[1]. This is the opppsite of Divergence, where the neurotransmitter is provided from a single presynaptic neuron to many postsynaptic neuron.

References

1. Alberts B, Bray D, Hopkins K, Johnson A, Lewis J, Roberts K et al. Essential cell biology. 3rd ed. New York: Garland Science; 2010.