im

from The Collaborative International Dictionary of English v.0.48

Im- \Im-\
   A form of the prefix in- not, and in- in. See {In-}. Im- also
   occurs in composition with some words not of Latin origin;
   as, imbank, imbitter.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

I'm \I'm\
   A contraction of I am.
   [1913 Webster]

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IM
       Information Management

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IM
       Instant Messaging (IM)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

IM
       Interface Module