mm

abbrev

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

The verdict

“mm” sits in 20 confusable pairs (corpus #1,186) as an abbreviation. The look-alike neighbours are the real trap.

#1,186
frequency rank, German
3,571
“M” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Einheitensymbol für Millimeter

Corpus desk

Index DE-mm · mm · German

mm · rank #1,186 · 0 variants · 20 confusables

  • FREQ-COMMON #1,186
  • LEN-SHORT 2 letters
  • VOW-0 0 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 3,571
  • PHOTO-FINISH Linke

Nearest frequency peer: Linke (-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 German 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 my
50% similar
mm vs Mr
0% similar
mm vs MS
0% similar

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

Key facts for mm
PropertyValue
Headwordmm
LanguageGerman
Part of speechAbbreviation
Letters2
Frequency rank#1,186
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “mm” sits in German frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). mm lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for mm is neighbouring look-alikes ("my", "Mr", …), not just typos; it is anabbreviation. Frequency #1,186 among 3,571 “M” headwords. Gloss: "Einheitensymbol für Millimeter".

No generated misspelling entries exist for mm in our index, which points to an orthography that plays by predictable German rules. It also participates in 20 confusable-pair relationships, "my", "Mr", "MS", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

This headword's origin isn't recorded in our source data, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct German form is mm, spelled M-M.

Definition

  1. 1
    Einheitensymbol für Millimeter

Recorded use

Wiktionary examples

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

  1. 1 mm = 10⁻³ m.
  2. 1 cm = 10 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 German corpus, MIT). See the methodology for how each field is sourced and updated.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "mm"?
"mm" is spelled M-M.
What does "mm" mean?
As an abbreviation, "mm" means: Einheitensymbol für Millimeter
What words are commonly confused with "mm"?
"mm" is commonly confused with "my", "Mr", "MS". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "mm" come from?
"mm" is a German word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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 "my". View pair
  • Usage frequency rank #1,186 among German headwords in this corpus. Corpus statistics
  • Browse more German 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