n., pl., i's, or I's, also is or Is.
- The ninth letter of the modern English alphabet.
- Any of the speech sounds represented by the letter i.
- The ninth in a series.
- Something shaped like the letter I.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
