tachyon

\ta.kjɔ̃\

/\ta.kjɔ̃\/ noun

The verdict

“tachyon” is uncommon French (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency French
7
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Particule hypothétique se déplaçant à une vitesse supérieure à celle de la lumière dans le vide.

Corpus desk

Index FR-tachyon · tachyon · French

tachyon · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "T" 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.

Key facts for tachyon
PropertyValue
Headwordtachyon
LanguageFrench
Part of speechNoun
IPA\ta.kjɔ̃\
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « tachyon » en français

tachyonreste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

tachyon is uncommon French outside the top frequency list, classed as anoun, transcribed \ta.kjɔ̃\. Rarity is why readers land here mid-draft. 2 senses are on record.

The misspelling generator found no plausible variants for tachyon, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.

This entry carries no recorded etymology, so its spelling is best read as a straightforward mapping from sound to letter. The correct French form is tachyon, spelled T-A-C-H-Y-O-N.

Definition

  1. 1
    Particule hypothétique se déplaçant à une vitesse supérieure à celle de la lumière dans le vide.
  2. 2
    Particule hypothétique se déplaçant à une vitesse supérieure à celle de la lumière dans le vide qui serait capable de procurer du bien-être à son exposition.

Recorded use

Wiktionary examples

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

  1. L’existence des tachyons n’a pu, jusqu’ici, être démontrée.
  2. Des « chambres à tachyons » ou des « barres à tachyons » qui promettent « d’équilibrer votre énergie » ? Le Détecteur de rumeurs est allé à la chasse aux tachyons.

Antonyms

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

How do you spell "tachyon"?
"tachyon" is spelled T-A-C-H-Y-O-N. The IPA pronunciation is \ta.kjɔ̃\.
What does "tachyon" mean?
As a noun, "tachyon" means: Particule hypothétique se déplaçant à une vitesse supérieure à celle de la lumière dans le vide.
How do you pronounce "tachyon"?
The IPA (International Phonetic Alphabet) transcription for "tachyon" is \ta.kjɔ̃\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "tachyon" come from?
"tachyon" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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.

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

Source: FrequencyWords open word-frequency list