mégatonne
\me.ɡa.tɔn\
The verdict
“mégatonne” is uncommon French (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency French
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Unité de mesure de masse en dehors du Système international (mais dont l’usage est accepté avec le SI), valant 10⁶ tonnes, et dont le symbole est Mt.
Corpus desk
Index FR-megatonne · mégatonne · French
mégatonne · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "M" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | mégatonne |
| Language | French |
| Part of speech | Noun |
| IPA | \me.ɡa.tɔn\ |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Longue queue: rang de « mégatonne » en français
Rare enough to double-check
mégatonne is uncommon French outside the top frequency list, classed as anoun, transcribed \me.ɡa.tɔn\. Rarity is why readers land here mid-draft. 2 senses are on record.
mégatonne has no tracked misspelling variants, a sign its spelling follows regular French conventions. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
No borrowing history is documented for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct French form is mégatonne, spelled M-É-G-A-T-O-N-N-E.
Definition
- 1Unité de mesure de masse en dehors du Système international (mais dont l’usage est accepté avec le SI), valant 10⁶ tonnes, et dont le symbole est Mt.
- 2Unité de mesure d’énergie explosive, équivalant à un million de tonnes de TNT. Son symbole est Mt ou MtTNT.
Recorded use
Wiktionary exampleThese source excerpts show how mégatonne appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Nous savons officieusement mais de façon à peu près certaine, que la puissance atomique globale de l’Amérique est approximativement quatre fois celle de la Russie ; la proportion se situe autour des chiffres suivants : 25.000 mégatonnes pour l’Amérique et 7.000 mégatonnes pour la Russie.
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.