postsynaptic

adjective

post·​syn·​ap·​tic ˌpōs(t)-sə-ˈnap-tik How to pronounce postsynaptic (audio)
1
: occurring after synapsis
a postsynaptic chromosome
2
: of, occurring in, or being a nerve cell by which a wave of excitation is conveyed away from a synapse
a postsynaptic membrane
postsynaptically adverb

Example Sentences

Recent Examples on the Web Until now, it's been believed that within a synapse, receptors are just randomly distributed over the postsynaptic cell membrane. Neuroskeptic, Discover Magazine, 11 Aug. 2013 Take a look: Here's the distribution of GluA1 and GluA2 AMPA receptors within a single postsynaptic bulb. Neuroskeptic, Discover Magazine, 11 Aug. 2013 The findings from this new study seem to bear on that mystery because the researchers found presynaptic gene sets expressed in neuroid cells and postsynaptic genes expressed in choanocytes. Quanta Magazine, 4 Nov. 2021 And every one of these billions and billions and billions of action potentials and postsynaptic potentials across the 10 quadrillion synapses connecting the neurons in the human brain are all taking place independent of each other. Gabriel A. Silva, Forbes, 19 Apr. 2021 What’s the consequence of all the work required to generate an action potential in the postsynaptic neuron? Gabriel A. Silva, Forbes, 19 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'postsynaptic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1909, in the meaning defined at sense 1

Time Traveler
The first known use of postsynaptic was in 1909

Dictionary Entries Near postsynaptic

Cite this Entry

“Postsynaptic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/postsynaptic. Accessed 28 Jan. 2023.

Medical Definition

postsynaptic

adjective
post·​syn·​ap·​tic ˌpōst-sə-ˈnap-tik How to pronounce postsynaptic (audio)
1
: occurring after synapsis
a postsynaptic chromosome
2
: relating to, occurring in, or being part of a neuron that receives a nerve impulse after it has crossed a synapse
postsynaptic dopamine receptors
At a synapse, information in the form of chemicals called neurotransmitters flows from the so-called presynaptic cell to one dubbed the postsynaptic cell.Joe Z. Tsien, Scientific American
postsynaptically adverb
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


Fashionable Words

  • dog-sunglasses-scarf
  • Which of these items is named for a deadly weapon?
Name That Thing

You know what it looks like… but what is it called?

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY