SMR
"smr" is a 3-letter English headword indexed on PlainSpell.
The verdict
“SMR” is uncommon English (frequency #64,018 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #64,018
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of shingled magnetic recording.
Corpus desk
Index EN-smr · SMR · English
SMR · rank #64,018 · 0 variants · 0 confusables
- FREQ-RARE #64,018
- LEN-MID 3 letters
- VOW-0 0 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH snakeskin
Nearest frequency peer: snakeskin (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “SMR”
Sparse band: bars invert rank so rarer forms read shorter
- slammer
slammer
35,989 corpus weight
- slogging
slogging
35,987 corpus weight
- Smalley
Smalley
35,986 corpus weight
- SMR
SMR
35,983 corpus weight
- snakeskin
snakeskin
35,982 corpus weight
- spliff
spliff
35,977 corpus weight
What this shows Long-tail view: where “SMR” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | SMR |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #64,018 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “SMR” in English
Rare enough to double-check
SMR is uncommon English at frequency #64,018 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
Our edit-distance generator produced no likely misspellings for SMR, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Abbreviation. The correct English form is SMR, spelled S-M-R.
Definition
- 1Initialism of shingled magnetic recording.
- 2Initialism of small modular reactor.
Recorded use
Wiktionary examplesThese source excerpts show how SMR appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
However, environmental campaigners and academics have argued that SMRs have no track record and that time and resources would be better spent on renewables such as more offshore wind.
Acoba has given Lovegrove, who served as permanent secretary in a predecessor department to DESNZ from 2013 to 2016, permission to “draw on his skills and experience gained in office to advise the Rolls-Royce SMR Board on its strategy and proposals.
Etymology
Abbreviation.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "SMR", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).