nou·​me·​non | \ ˈnü-mə-ˌnän How to pronounce noumenon (audio) \
plural noumena\ ˈnü-​mə-​nə How to pronounce noumena (audio) , -​ˌnä \

Definition of noumenon

: a posited object or event as it appears in itself independent of perception by the senses

Other Words from noumenon

noumenal \ ˈnü-​mə-​nᵊl How to pronounce noumenal (audio) \ adjective

First Known Use of noumenon

1796, in the meaning defined above

History and Etymology for noumenon

German, from Greek nooumenon that which is apprehended by thought, from neuter of present passive participle of noein to think, conceive, from nous mind

Keep scrolling for more

Learn More about noumenon

Statistics for noumenon

Look-up Popularity

Time Traveler for noumenon

The first known use of noumenon was in 1796

See more words from the same year

Keep scrolling for more

More from Merriam-Webster on noumenon

Rhyming Dictionary: Words that rhyme with noumenon

Nglish: Translation of noumenon for Spanish Speakers Encyclopedia article about noumenon

Comments on noumenon

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


behavior toward others

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”?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!