mm
\mi.li.mɛtʁ\
The verdict
“mm” is a regularly-used French word, ranked #1,092 in French word frequency and used as a symbol.
- #1,092
- frequency rank, French
- 2
- letters
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | mm |
| Language | French |
| Part of speech | Symbol |
| IPA | \mi.li.mɛtʁ\ |
| Letters | 2 |
| Frequency rank | #1,092 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “mm” sits in French frequency
Spelling & Dictionary Insight
The French entry for mm is 2 letters long, classified as a symbol, and transcribed in the International Phonetic Alphabet as \mi.li.mɛtʁ\. Corpus data places it at rank #1,092 in overall French word frequency, indicating it appears regularly in written and spoken text. The dominant gloss from Wiktionary reads: "Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).".
No misspelling variants are generated for mm in our index, typically a sign the spelling maps closely to how the word sounds. It also participates in 20 confusable-pair relationships, "MR", "my", "ms", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
This entry carries no recorded etymology, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct French form is mm, spelled M-M.
Definition
- 1Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).
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 French corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “mm”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is M-M - every other letter order is a misspelling in standard orthography.
- Say it as \mi.li.mɛtʁ\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “MR” - see the side-by-side comparison. mm vs MR
- Browse more French words and confusable pairs in the same reference. French words
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.