Source : Webster's Revised Unabridged Dictionary (1913)

Lipogram \Lip"o*gram\ (l[i^]p"[-o]*gr[a^]m; 277), n. [Gr.
   lei`pein, lipei^n, to leave, omit + -gram.]
   A writing composed of words not having a certain letter or
   letters; -- as in the Odyssey of Tryphiodorus there was no A
   in the first book, no B in the second, and so on.

Source : WordNet®

lipogram
     n : a text that excludes a particular letter or particular
         letters of the alphabet