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1) of, relating to, or participating in synapsis <\synaptic chromosomes>
2) of or relating to a synapse <\synaptic transmission>
syn·ap·ti·cal·ly -ti-k(ə-)lē adv
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syn·ap·tic (sĭ-napґtik) 1. pertaining to or affecting a synapse. 2. pertaining to synapsis.Medical dictionary. 2011.