tachyon
/ˈtækiˌɑn/
noun
- A hypothetical particle that travels faster than the speed of light.
- Some science fiction stories use the idea of a tachyon to explain faster-than-light communication.
- Scientists have never observed a tachyon, but it remains an interesting concept in theoretical physics.
- In physics class, we learned that a tachyon is a theoretical particle that moves faster than light.