To save this word, you'll need to log in.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tachyon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1967, in the meaning defined above
tachy- + -on entry 2
Keep scrolling for more
Time Traveler for tachyon
See more words from the same year
Cite this Entry
“Tachyon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachyon. Accessed 21 Sep. 2020.
More from Merriam-Webster on tachyon
Britannica English: Translation of tachyon for Arabic Speakers
Britannica.com: Encyclopedia article about tachyon
Comments on tachyon
What made you want to look up tachyon? Please tell us where you read or heard it (including the quote, if possible).
See Definitions and Examples »
Get Word of the Day daily email!
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Words from the week of 9/18/2020
Is it any clearer now?
For when you need it there quickly
All your favorite pet peeves
We're intent on clearing it up
We're gonna stop you right there
How to use a word that (literally) drives some pe...
The awkward case of 'his or her'
More/moor than/then two/too/to.
All right, it's time for a puppy quiz.
Do you know the person or title these quotes desc...