Webster's English Dictionary

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synapse

1. syn.apse \'sin-.aps, s*-'naps\ n [NL synapsis, fr. Gk, juncture, fr. 
   synaptein to fasten together, f]r. syn- + haptein to fasten : the point at 
   which a nervous impulse passes from one neuron to another 
2. synapse vi : to form a synapse or come together in synapsis