Em

Em

1. (metrology) Symbol for exameter (exametre), an SI unit of length equal to 10¹⁸ meters (metres).
2. (chemical symbol, dated) emanation
3. (music) Symbol for E minor.

Em

1. A diminutive of the female given names Emily, Emma, or Emmeline.
   • 1900 May 17, L[yman] Frank Baum, chapter 24, in The Wonderful Wizard of Oz, Chicago, Ill.; New York, N.Y.: Geo[rge] M[elvin] Hill Co., →OCLC:

     And oh, Aunt Em! I'm so glad to be at home again!

   • 2008, Anne Enright, Yesterday's Weather, Vintage, published 2009, →ISBN, page 4:

     Mind you, he never calls me anything back. Isn't that the way of it? What do men call their wives. 'Em...' Like every woman in the planet was christened Emily. 'Em...is that shirt clean?'

2. Clipping of Eminem.

Em (plural Ems)

1. Alternative letter-case form of em.

• -me-, /me, M&E, ME, Me, Me., me

• IPA^(key): /ˈɛm/

Em

1. genitive plural of Ema