Relating to or having the characteristics of tachyons, which are hypothetical particles that travel faster than the speed of light.
Tachyonic things are very fast and maybe strange or unusual.
Examples:
The tachyonic particles are very fast.
She studied the tachyonic properties of light.
Tachyonic travel is only in stories.
The tachyonic spaceship zoomed past the stars.
A tachyonic race car would be faster than anything on Earth.
The tachyonic rabbit hopped around the universe.