: a synthetic amino acid C5H9NO4 that binds selectively to a subset of glutamate receptors on neurons where the binding of glutamate results in the opening of calcium channels

Examples of NMDA in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In their article, published in Molecular Psychiatry, the researchers demonstrated that the gene mutation reduces the activity of the NMDA electrical receptor, which aids in neuronal communication, thereby increasing the risk of developing mental disorders. Jorge Garay, Wired News, 8 Dec. 2025 Memantine Memantine works by preventing glutamate from attaching to the N-methyl-D-aspartate (NMDA) receptor (binding site). Ross Phan, Verywell Health, 12 Aug. 2025 Both the anesthetic and potential neuroprotective effects occur because xenon can bind to brain receptors called N-methyl-D-aspartate (NMDA) receptors. Stephanie Pappas, Scientific American, 29 May 2025

Word History

Etymology

N-methyl-D-aspartate

First Known Use

1986, in the meaning defined above

Time Traveler
The first known use of NMDA was in 1986

Browse Nearby Words

Cite this Entry

“NMDA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/NMDA. Accessed 25 Dec. 2025.

Medical Definition

: a synthetic amino acid C5H9NO4 that binds selectively to a subset of glutamate receptors on neurons where the binding of glutamate results in the opening of calcium channels

called also N-methyl-D-aspartate

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!