The Collaborative International Dictionary of English v.0.48:

Lyterian \Ly*te"ri*an\ (l[-i]*t[=e]"r[i^]*an), a. [Gr. lyth`rios
   healing, fr. lyth`r a deliverer, fr. ly`ein to loosen.]
   (Med.)
   Terminating a disease; indicating the end of a disease.
   [1913 Webster]