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Noun: tachyon
  1. (physics) any hypothetical particle that always travels faster than the speed of light; a particle with a negative mass squared

Derived forms: tachyons

Encyclopedia: Tachyon

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tachistoscope
tachogram
tachograph
tachometer
tachycardia
Tachyglossidae
Tachyglossus
tachygraphy
tachylite
tachymeter
tachyon
tachyphylaxis
Tachypleus
tacit
tacit consent
tacitly
taciturn
taciturnity
taciturnly
Tacitus
tack