Source : Webster's Revised Unabridged Dictionary (1913)

Lipogrammatic \Lip`o*gram*mat"ic\ (-m[a^]t"[i^]k), a. [Gr.
   lipogra`mmatos: cf. F. lipogrammatique.]
   Omitting a letter; composed of words not having a certain
   letter or letters; as, lipogrammatic writings.