Meanings
nountachyon (plural tachyons)
plural tachyons
- particlenatural sciencesA hypothetical particle that travels faster than the speed of light.
- natural sciencesA flaw in a physical theory that predicts the existence of tachyons or similar paradoxical results. Compare with ghost.
Synonyms & antonyms
Similar
tachyonic particle
Origin
Formed as: tachy- + -on, from τᾰχῠ́ς (tăkhŭ́s, “swift”, “rapid”). Coined by American physicist Gerald Feinberg in 1967.
Full word history & related roots →Translations
Arabic تَكْيُون
- تَكْيُون (takyūn)hypothetical particle
Bengali ট্যাকিয়ন
- ট্যাকিয়ন (ṭêkiẏon)hypothetical particle
Catalan taquió
- taquióhypothetical particle
Chinese Mandarin 快子
- 快子 (kuàizǐ)hypothetical particle
Danish takyon
- takyonhypothetical particle
Esperanto taĥiono
- taĥionohypothetical particle
Estonian tahhüon
- tahhüonhypothetical particle
Finnish takioni
- takionihypothetical particle
French tachyon
- tachyonhypothetical particle
German Tachyon
- Tachyonhypothetical particle
Greek τάχυον
- τάχυον (táchyon)hypothetical particle
Hebrew טכיון
- טכיוןhypothetical particle
Icelandic hraðeind
- hraðeindhypothetical particle
Indonesian takhion
- takhionhypothetical particle
Italian tachione
- tachionehypothetical particle
Japanese タキオン, 陰子
- タキオン (takion)hypothetical particle
- 陰子 (inshi)hypothetical particle
Korean 타키온
- 타키온 (takion)hypothetical particle
Lithuanian tachionas
- tachionashypothetical particle
Malay takion
- takionhypothetical particle
Norwegian Bokmål takyon
- takyonhypothetical particle
Persian تاکیون
- تاکیونhypothetical particle
Polish tachion
- tachionhypothetical particle
Portuguese táquion, taquião
- táquionhypothetical particle
- taquiãohypothetical particle
Romanian tahion
- tahionhypothetical particle
Russian тахио́н
- тахио́н (taxión)hypothetical particle
Slovak tachyón
- tachyónhypothetical particle
Spanish taquión
- taquiónhypothetical particle
Swedish takyon
- takyonhypothetical particle
Thai แทคีออน
- แทคีออนhypothetical particle
Turkish takyon
- takyonhypothetical particle
Ukrainian тахіо́н
- тахіо́н (taxión)hypothetical particle
Cite this entry
APA
tachyon. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tachyon
MLA
“tachyon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tachyon. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “tachyon,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tachyon.
Source: tachyon on Wiktionary, CC BY-SA 4.0.