syn·ap·tic \sə̇ˈnaptik\adjective alsosyn·ap·ti·cal\-tə̇kəl\ Etymology: from New Latin synapsis, after such pairs as English prolepsis : proleptic, proleptical : of, relating to, or communicated by a synapse or synapsis < synaptic transmission > < synaptic delay > • synapticallyadverb