Definition of presynaptic
: of, occurring in, or being a neuron by which a nerve impulse is conveyed to a synapse <a presynaptic membrane> <a presynaptic neuron>
presynapticallyplay \-ti-k(ə-)lē\ adverb
First Known Use of presynaptic
Medical Definition of presynaptic
: relating to, occurring in, or being part of a neuron by which a nerve impulse is conveyed to a synapse <presynaptic terminals> <presynaptic inhibition> <a presynaptic membrane>
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