Source : Webster's Revised Unabridged Dictionary (1913)

Disciple \Dis*ci"ple\, n. [OE. disciple, deciple, OF. disciple,
   fr. L. discipulus, fr. discere to learn (akin to docere to
   teach; see {Docile}) + prob. a root meaning to turn or drive,
   as in L. pellere to drive (see {Pulse}).]
   One who receives instruction from another; a scholar; a
   learner; especially, a follower who has learned to believe in
   the truth of the doctrine of his teacher; an adherent in
   doctrine; as, the disciples of Plato; the disciples of our
   Savior.

   {The disciples}, or {The twelve disciples}, the twelve
      selected companions of Jesus; -- also called {the
      apostles}.

   {Disciples of Christ}. See {Christian}, n., 3, and
      {Campbellite}.

   Syn: Learner; scholar; pupil; follower; adherent.

Christian \Chris"tian\, n. [L. christianus, Gr. ?; cf. AS.
   cristen. See {Christ}.]
   1. One who believes, or professes or is assumed to believe,
      in Jesus Christ, and the truth as taught by Him;
      especially, one whose inward and outward life is conformed
      to the doctrines of Christ.

            The disciples were called Christians first in
            Antioch.                              --Acts xi. 26.

   2. One born in a Christian country or of Christian parents,
      and who has not definitely becomes an adherent of an
      opposing system.

   3. (Eccl.)
      (a) One of a Christian denomination which rejects human
          creeds as bases of fellowship, and sectarian names.
          They are congregational in church government, and
          baptize by immersion. They are also called {Disciples
          of Christ}, and {Campbellites}.
      (b) One of a sect (called {Christian Connection}) of
          open-communion immersionists. The Bible is their only
          authoritative rule of faith and practice.

   Note: In this sense, often pronounced, but not by the members
         of the sects, kr[=i]s"chan.

Source : WordNet®

Disciples of Christ
     n : a Protestant church that accepts the Bible as the only
         source of true Christian faith and practices baptism by
         immersion [syn: {Christian Church}]