Dictionary
Thesaurus
Medical
Scrabble®
Spanish Central
Browse DictionaryBrowse Thesaurus
Get our free apps!iPhone•iPad•Android
Games
Word of the Day
Video
Blog: Words at Play
My Faves
Dictionary

1is

Definition of IS

present 3d singular of be
dialect present 1st & 2d singular of be
dialect present plural of be
ADVERTISEMENT

Origin of IS

Middle English, from Old English; akin to Old High German ist is (from sīn to be), Latin est (from esse to be), Greek esti (from einai to be)

2is

abbreviation

Definition of IS

island; isle

Rhymes with IS

biz, fizz, frizz, his, Ms., phiz, quiz, whiz, wiz

IS

abbreviation

Definition of IS

information system
IS Defined for Kids

is

Definition of IS for Kids

present third person sing of be

Learn More About IS

Browse

13 ENTRIES FOUND:
  1. is
  2. is't
  3. be
  4. be around
  5. i
  6. Isa
  7. is-
  8. as
  9. CD-I
  10. coenzyme I
  11. helium I
  12. orange I
  13. I and S
Next Word in the Dictionary: is-Previous Word in the Dictionary: IrvingiteAll Words Near: is
ADVERTISEMENT
10 Charming Words for Nasty People
Put-downs with flair
Learn More
When "Literally" isn't, well, literal
How to use a word that (literally) drives some people nuts.
Watch Now
Know what this is?
Test your vocab with our fun, fast game
Go Play
Fear of cats?
Ailurophobia, and 9 other unusual fears
Learn More
Join Us
Merriam-Webster
on Facebook
Merriam-Webster
on Twitter
Bookstore: Digital and Print
Merriam-Webster references for Mobile, Kindle, print, and more.
See All
Other Merriam-Webster Dictionaries