NMDA
"nmda" is a 4-letter English headword indexed on PlainSpell.
The verdict
“NMDA” is uncommon English (frequency #58,887 among 24,391 “N” headwords), classed as a noun. The kind of spelling people second-guess.
- #58,887
- frequency rank, English
- 24,391
- “N” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Abbreviation of N-Methyl-D-aspartic acid, an amino acid derivative.
| Property | Value |
|---|---|
| Headword | NMDA |
| Language | English |
| Part of speech | Noun |
| Letters | 4 |
| Frequency rank | #58,887 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “NMDA” sits in English frequency
Rare enough to double-check
NMDA is uncommon English at frequency #58,887 among 24,391 “N” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Abbreviation of N-Methyl-D-aspartic acid, an amino acid derivative.".
We couldn't generate a plausible misspelling set for NMDA, a straightforward case of a spelling with little room for common typos. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.
No documented word history exists for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is NMDA, spelled N-M-D-A.
Definition
- 1Abbreviation of N-Methyl-D-aspartic acid, an amino acid derivative.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “NMDA”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is N-M-D-A - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.