1. a hypothetical particle that travels faster than the speed of light
Usage: physics

Examples

• Scientists have theorized about tachyons but never observed them.
• The existence of tachyons would violate Einstein’s theory of relativity.
• In science fiction, tachyons are often used for faster-than-light communication.
• Researchers continue to debate whether tachyons could actually exist.
• The tachyon remains a purely theoretical particle in modern physics.
• Some physicists argue that tachyons would create paradoxes in time travel.