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presynaptic

American  
[pree-si-nap-tik] / ˌpri sɪˈnæp tɪk /

adjective

Physiology.
  1. being or occurring on the transmitting end of a discharge across a synapse.


Other Word Forms

Etymology

Origin of presynaptic

1905–10; pre- + synaptic ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To examine how these networks function, he used the patch-clamp technique, which measures tiny electrical signals within specific parts of neurons, including presynaptic terminals and dendrites.

From Science Daily May 3, 2026

Synaptic versicles -- sphere-like structures that store and release neurotransmitters such as dopamine and serotonin, are found in the presynaptic terminals of neurons.

From Science Daily Dec. 3, 2024

This makes the postsynaptic neuron less responsive to glutamate released from the presynaptic neuron.

From Textbooks Jun. 9, 2022

Fusion of a vesicle with the presynaptic membrane causes neurotransmitter to be released into the synaptic cleft, the extracellular space between the presynaptic and postsynaptic membranes, as illustrated in Figure 26.15.

From Textbooks Jun. 9, 2022

The Ca2+ facilitates the merging of the vesicle with the presynaptic membrane so that the neurotransmitter is released through exocytosis into the small gap between the cells, known as the synaptic cleft.

From Textbooks Jun. 19, 2013

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