ˈlipəˌgram, ˈlī- noun
Etymology: Middle Greek lipogrammatos, adjective, lacking a letter, from Greek lipo- lipo- (II) + -grammatos (from grammat-, gramma letter) — more at gram
: a writing composed of words not having a certain letter (as the Odyssey of Tryphiodorus which had no alpha in the first book, no beta in the second, and so on)