The Collaborative International Dictionary of English v.0.48:

Dis \Dis\, prop. n. [L.]
   The god Pluto, god of the underworld; also called Dis
   Pater. --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

dis \dis\ v. t. [shortened from disrespect.] [imp. & p. p.
   dissed; p. pr. & vb. n. dissing.]
   to treat in a disrespectful manner; to insult, disparage or
   belittle. [slang]
   [PJC]

The Collaborative International Dictionary of English v.0.48:

dis- \dis-\ (?; 258)
   1. A prefix from the Latin, whence F. d['e]s, or sometimes
      d['e]-, dis-. The Latin dis-appears as di-before b, d,
      g, l, m, n, r, v, becomes dif-before f, and either dis-or
      di- before j. It is from the same root as bis twice, and
      duo, E. two. See Two, and cf. Bi-, Di-, Dia-. Dis-
      denotes separation, a parting from, as in distribute,
      disconnect; hence it often has the force of a privative
      and negative, as in disarm, disoblige, disagree. Also
      intensive, as in dissever.
      [1913 Webster]

   Note: Walker's rule of pronouncing this prefix is, that the s
         ought always to be pronounced like z, when the next
         syllable is accented and begins with "a flat mute [b,
         d, v, g, z], a liquid [l, m, n, r], or a vowel; as,
         disable, disease, disorder, disuse, disband, disdain,
         disgrace, disvalue, disjoin, dislike, dislodge, dismay,
         dismember, dismiss, dismount, disnatured, disrank,
         disrelish, disrobe." Dr. Webster's example in
         disapproving of Walker's rule and pronouncing dis-as
         diz in only one (disease) of the above words, is
         followed by recent ortho["e]pists. See Disable,
         Disgrace, and the other words, beginning with dis-,
         in this Dictionary.
         [1913 Webster]

   2. A prefix from Gr. di`s- twice. See Di-.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Dis
    n 1: god of the underworld; counterpart of Greek Pluto [syn:
         Dis, Orcus]

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

dis

    A CPython bytecode disassembler.

   dis home (https://docs.python.org/2/library/dis.html).

   (2014-06-08)