Meaning & use
Boutons
Last updated
Small, bulb-like swellings at the terminal end of an axon that store and release neurotransmitters across a synapse.
See it in a sentence
Under the electron microscope, the researchers could clearly see synaptic boutons clustered along the axon terminal.
Changes in bouton density are associated with learning and memory formation in the brain.
A note on using this word
The term borrows the French word 'bouton,' meaning button, describing the small, rounded shape of these structures under magnification.
Words with a similar meaning
synaptic terminalsaxon terminals
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