vitesse de la lumière
\vi.tɛs də la ly.mjɛʁ\
The verdict
“vitesse de la lumière” is uncommon French (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency French
- 21
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Vitesse de la lumière dans le vide, une constante physique fixée à 299,792,458 m/s par la définition du mètre. Le symbole est c.
| Property | Value |
|---|---|
| Headword | vitesse de la lumière |
| Language | French |
| Part of speech | Noun |
| IPA | \vi.tɛs də la ly.mjɛʁ\ |
| Letters | 21 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “vitesse de la lumière” sits in French frequency
Rare enough to double-check
vitesse de la lumière is uncommon French outside the top frequency list, classed as anoun, transcribed \vi.tɛs də la ly.mjɛʁ\. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for vitesse de la lumière, suggesting the orthography follows predictable French patterns. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct French form is vitesse de la lumière, spelled V-I-T-E-S-S-E- -D-E- -L-A- -L-U-M-I-È-R-E.
Definition
- 1Vitesse de la lumière dans le vide, une constante physique fixée à 299,792,458 m/s par la définition du mètre. Le symbole est c.
- 2Vitesse de la lumière dans une substance, qui est inférieure à celle dans le vide.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “vitesse de la lumière”
The practical upshot for anyone who landed here from a spell-check.
- The one correct French spelling is V-I-T-E-S-S-E- -D-E- -L-A- -L-U-M-I-È-R-E - every other letter order is a misspelling in standard orthography.
- Say it as \vi.tɛs də la ly.mjɛʁ\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.