NOUN (1)

1. (prosody) a line of verse that lacks a syllable in the last metrical foot;


ADJECTIVE (1)

1. (verse) metrically incomplete; especially lacking one or more syllables in the final metrical foot;

The Collaborative International Dictionary of English v.0.48:

Catalectic \Cat`a*lec"tic\, a. [L. catalecticus, Gr. ?
   incomplete, fr. ? to leave off; kata` down, wholly + lh`gein
   to stop.]
   1. (Pros.) Wanting a syllable at the end, or terminating in
      an imperfect foot; as, a catalectic verse.
      [1913 Webster]

   2. (Photog. & Chem.) Incomplete; partial; not affecting the
      whole of a substance. --Abney.
      [1913 Webster] Catalepsy

WordNet (r) 3.0 (2006):

catalectic
    adj 1: (verse) metrically incomplete; especially lacking one or
           more syllables in the final metrical foot [ant:
           acatalectic, hypercatalectic]
    n 1: (prosody) a line of verse that lacks a syllable in the last
         metrical foot