The synaptic junction between an axon terminal of one neuron and either the initial axon segment or an axon terminal of another nerve cell. ... (05 Mar 2000) ... 
one between the axon of one neuron and the axon of another neuron.
Type: Term Definitions: 1. the synaptic junction between an axon terminal of one neuron and either the initial axon segment or an axon terminal of another nerve cell.