Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

ousia

noun
ou·​sia | \ˈüzēə, ˈüsēə, ˈüzh(ē)ə, ˈüsh(ē)ə\
plural -s

Definition of ousia 

1 : true being : entity, essence, substance

2 : hypostasis sense 2a

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!

First Known Use of ousia

1861, in the meaning defined at sense 1

History and Etymology for ousia

Greek, from ous- (stem of ōn, present participle of einai to be) + -ia -y

Keep scrolling for more

Learn More about ousia

Statistics for ousia

Look-up Popularity

Time Traveler for ousia

The first known use of ousia was in 1861

See more words from the same year

Comments on ousia

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

Show Comments  Hide Comments 

WORD OF THE DAY

epitome

a typical or ideal example

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

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

Words at Play

Ask the Editors

Word Games