rai·​on | \ rīˈōn\
plural -s

Definition of raion

: a political subdivision in the U.S.S.R. comparable to the U.S. county : district

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for raion

Russian raĭon, district, province, from French rayon honeycomb, department of a store, from Old French ree, raie honeycomb, of Germanic origin; akin to Old High German rāza honeycomb, Middle Dutch rāte, and perhaps to Latin cratis wickerwork, hurdle

Keep scrolling for more

Comments on raion

What made you want to look up raion? Please tell us where you read or heard it (including the quote, if possible).


showing courage and determination

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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