nm

symbol

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

The verdict

“nm” sits in 20 confusable pairs (corpus #22,954) as a symbol. The look-alike neighbours are the real trap.

#22,954
frequency rank, French
1,563
“N” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Symbole du nanomètre, unité de mesure de longueur du Système international (SI), valant 0,000000001 mètre (10⁻⁹ mètre).

Corpus desk

Index FR-nm · nm · French

nm · rank #22,954 · 0 variants · 20 confusables

  • FREQ-MID #22,954
  • LEN-SHORT 2 letters
  • VOW-0 0 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 1,563
  • PHOTO-FINISH Nicaragua

Nearest frequency peer: Nicaragua (-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 “nm”

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

corpus weight

What this shows Bars show where “nm” 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).

nm vs no
50% similar
nm vs nu
50% similar
nm vs ny
50% similar

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

Key facts for nm
PropertyValue
Headwordnm
LanguageFrench
Part of speechSymbol
Letters2
Frequency rank#22,954
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Où “nm” se place dans la fréquence du français

La fréquence va de la poignée de mots du quotidien (gauche) à la longue queue presque jamais vue (droite).nmse place ici:

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

Les tics avancent en logarithme; chacun est de l'ordre de dix fois plus rare. Dans la même bande de rareté figurent « Nicaragua » (#22,953), « nourrice » (#22,955), « nourrie » (#22,956). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for nm is neighbouring look-alikes ("no", "nu", …), not just typos; it is asymbol. Frequency #22,954 among 1,563 “N” headwords. Gloss: "Symbole du nanomètre, unité de mesure de longueur du Système international (SI), valant 0,000000001 mètre (10⁻⁹ mètre).".

Our edit-distance generator produced no likely misspellings for nm, suggesting the orthography follows predictable French patterns. It also participates in 20 confusable-pair relationships, "no", "nu", "ny", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Wiktionary doesn't record an etymology for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct French form is nm, spelled N-M.

Definition

  1. 1
    Symbole du nanomètre, unité de mesure de longueur du Système international (SI), valant 0,000000001 mètre (10⁻⁹ mètre).

Recorded use

Wiktionary example

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

  1. Le cliché anérythre est réalisé à l'aide d'un filtre vert centré à 570 nm. Cette longueur d'onde permet une meilleure visualisation de tous les éléments rouges ou orangés du fond d'œil.

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 "nm"?
"nm" is spelled N-M.
What does "nm" mean?
As a symbol, "nm" means: Symbole du nanomètre, unité de mesure de longueur du Système international (SI), valant 0,000000001 mètre (10⁻⁹ mètre).
What words are commonly confused with "nm"?
"nm" is commonly confused with "no", "nu", "ny". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "nm" come from?
"nm" is a French 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 "nm". Here's where to go from here.

  • "nm" maps to 20 confusable pairs in this vintage; the highest-scored is "no". View pair
  • Usage frequency rank #22,954 among French headwords in this corpus. Corpus statistics
  • Browse more French words in the "N" letter cohort. N–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