presynaptic
Americanadjective
Other Word Forms
- presynaptically adverb
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.
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
Calcium ions entering the cell initiate a signaling cascade that causes small membrane-bound vesicles, called synaptic vesicles, containing neurotransmitter molecules to fuse with the presynaptic membrane.
From Textbooks • Jun. 9, 2022
Note that these designations are relative to a particular synapse—most neurons are both presynaptic and postsynaptic.
From Textbooks • Jun. 9, 2022
Synaptic vesicles at the axon terminal of the presynaptic neuron release chemical messengers called neurotransmitters into the junction; neurotransmitters then bind to receptors embedded in the membrane of the postsynaptic neuron.
From Textbooks • Jun. 9, 2022
Serotonin is transported back into the presynaptic cell for repackaging.
From Textbooks • Jun. 19, 2013
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
