ti·​tho·​nia tə-ˈthō-nyə How to pronounce tithonia (audio)
: any of a genus (Tithonia) of tall composite herbs or shrubs of Mexico and Central America that have flower heads resembling sunflowers and that are sometimes grown as ornamentals

Word History


New Latin, probably from Latin Tithonia, poetic name of Aurora

First Known Use

1940, in the meaning defined above

Time Traveler
The first known use of tithonia was in 1940

Dictionary Entries Near tithonia

Cite this Entry

“Tithonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tithonia. Accessed 7 Feb. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Hear a word and type it out. How many can you get right?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?