This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or relating to a tachyon or tachyons.

adj. Moving or capable of moving faster than the speed of light.

"If A sends a tachyonic message to B, in another galaxy, and B replies tachyonically, then A gets the reply before he sent the message."

tachyon    tachyons   

nu-metal    references/suggested    extraplanetary    antiballistic    single-component    radiofrequency    radiate    suns'    sallow-complexioned    blood-brain