polysynaptic
/ˌpɒlɪsɪˈnaptɪk/Neurol. and Physiology
adjective
Involving several synapses; specifically designating a reflex that involves more than one synapse (primarily within the central nervous system), and a nervous impulse that requires more than one neuronal junction for its propagation.
Origin
1940s. From poly- + synaptic.