mm

\mi.li.mɛtʁ\

/\mi.li.mɛtʁ\/ symbol

By · According to Wiktionary data (CC BY-SA) ·

The verdict

“mm” sits in 20 confusable pairs (corpus #1,092) as a symbol. The look-alike neighbours are the real trap.

#1,092
frequency rank, French
5,038
“M” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).

Corpus desk

Index FR-mm · mm · French

mm · rank #1,092 · 0 variants · 20 confusables

  • FREQ-COMMON #1,092
  • LEN-SHORT 2 letters
  • VOW-0 0 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,038
  • PHOTO-FINISH fallait

Nearest frequency peer: fallait (-1 rank slots)

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.

Frequency neighbourhood for “mm”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “mm” sits against the nearest ranked French headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

mm vs MR
0% similar
mm vs my
50% similar
mm vs ms
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for mm
PropertyValue
Headwordmm
LanguageFrench
Part of speechSymbol
IPA\mi.li.mɛtʁ\
Letters2
Frequency rank#1,092
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Où “mm” se place dans la fréquence du français

De gauche à droite: le peu qui porte la parole quotidienne, puis la longue queue quasi invisible.mmse place ici:

#1#100#1K#10K#100K
← used constantlyrarely used →

L'axe est logarithmique: chaque tic marque environ dix fois moins de fréquence. Dans la même bande de rareté figurent « fallait » (#1,091), « mémoire » (#1,093), « dirait » (#1,090). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for mm is neighbouring look-alikes ("MR", "my", …), not just typos; it is asymbol pronounced \mi.li.mɛtʁ\. Frequency #1,092 among 5,038 “M” headwords. Gloss: "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

  1. 1
    Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).

Recorded use

Wiktionary example

These source excerpts show how mm appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Cet isotope a été utilisé pour gammagraphier les soudures aux collerettes (frettes) des culottes et tuyaux droits, dont l’épaisseur dépasse 25 mm.

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

How do you spell "mm"?
"mm" is spelled M-M. The IPA pronunciation is \mi.li.mɛtʁ\.
What does "mm" mean?
As a symbol, "mm" means: Symbole du millimètre, unité de mesure de longueur du Système international (SI), valant 0,001 mètre (10⁻³ mètre).
What words are commonly confused with "mm"?
"mm" is commonly confused with "MR", "my", "ms". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "mm"?
The IPA (International Phonetic Alphabet) transcription for "mm" is \mi.li.mɛtʁ\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "mm" come from?
"mm" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

What to do next

You've looked up "mm". Here's where to go from here.

  • "mm" maps to 20 confusable pairs in this vintage; the highest-scored is "MR". View pair
  • Usage frequency rank #1,092 among French headwords in this corpus. Corpus statistics
  • Browse more French words in the "M" letter cohort. M–Z browse

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list