Cite this Entry
“Radii.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radii. Accessed 25 Sep. 2021.
Keep scrolling for more
More Definitions for radii
More from Merriam-Webster on radii
Thesaurus: All synonyms and antonyms for radii
Nglish: Translation of radii for Spanish Speakers
Britannica English: Translation of radii for Arabic Speakers
See Definitions and Examples »
Get Word of the Day daily email!
Farm Idioms Quiz
Can you spell these 10 commonly misspelled words?
Spell words. Make bears.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Top 10 Latin Phrases
Top 10 Funny-Sounding & Interesting Words
Courtesy of writer Emily Ogden
Why does this season have two different names?
A simple trick to keep them separate
How 'literally' can mean "figuratively"
How to use a word that (literally) drives some pe...
The awkward case of 'his or her'
A tricky quiz about soundalike words
Take the quiz
How many animals can you identify?
A game of winding words.
Play the game