The Collaborative International Dictionary of English v.0.48:

Mis- \Mis-\ (m[i^]s-). [In words of Teutonic origin, fr. AS.
   mis-; akin to D. mis-, G. miss-, OHG. missa-, missi-, Icel. &
   Dan. mis-, Sw. miss-, Goth. missa-; orig., a p. p. from the
   root of G. meiden to shun, OHG. m[imac]dan, AS.
   m[imac][eth]an ([root]100. Cf. Miss to fail of). In words
   from the French, fr. OF. mes-, F. m['e]-, mes-, fr. L. minus
   less (see Minus). In present usage these two prefixes are
   commonly confounded.]
   A prefix used adjectively and adverbially in the sense of
   amiss, wrong, ill, wrongly, unsuitably; as, misdeed, mislead,
   mischief, miscreant.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mis \Mis\ (m[i^]s), a. & adv. [See Amiss.]
   Wrong; amiss. [Obs.] "To correcten that [which] is mis."
   --Chaucer.
   [1913 Webster]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MIS
       Management Information System


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MIS
       Mega Iterations per Second


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MIS
       Micro Instruction Sequencer (Intel, CPU)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MIS
       Mounting Interface Standard (VESA)


The Free On-line Dictionary of Computing (30 December 2018):

Management Information System
MIS

    (MIS) A computer system, usually based on a
   mainframe or minicomputer, designed to provide management
   personnel with up-to-date information on an organisation's
   performance, e.g. inventory and sales.  These systems output
   information in a form that is useable by managers at all
   levels of the organisation: strategic, tactical, and
   operational.  A good example of an MIS report is an annual
   report for a stockholder (a scheduled report).

   [Que's Computer User's Dictionary Second Edition, 1992].

   (2001-04-01)


Bouvier's Law Dictionary, Revised 6th Ed (1856):

MIS. A syllable which prefixed to some word signifies some fault or defect;
as, misadventure, misprision, mistrial, and the like.