WordNet (r) 3.0 (2006):

DP
    n 1: a person forced to flee from home or country [syn:
         displaced person, DP, stateless person]

The Free On-line Dictionary of Computing (19 January 2023):

DP

   1. data processing.

   According to hackers, use of the term marks one immediately as
   a suit.

   See DPer.

   2. dot pitch.

   3. Dissociated Press.

   [Jargon File]

   (1996-07-22)


The Jargon File (version 4.4.7, 29 Dec 2003):

DP
 /D·P/, n.

    1. Data Processing. Listed here because, according to hackers, use of the
    term marks one immediately as a suit. See DPer.

    2. Common abbrev for Dissociated Press.