Source : Webster's Revised Unabridged Dictionary (1913)

Anacoluthon \An`a*co*lu"thon\, n. [Gr. ?, ?, not following,
   wanting sequence; 'an priv. + ? following.] (Gram.)
   A want of grammatical sequence or coherence in a sentence; an
   instance of a change of construction in a sentence so that
   the latter part does not syntactically correspond with the
   first part.

Source : WordNet®

anacoluthon
     n : an abrupt change within a sentence from one syntactic
         structure to another [syn: {anacoluthia}]
     [also: {anacolutha} (pl)]