The Collaborative International Dictionary of English v.0.48:

Panomphean \Pan`om*phe"an\, a. [L. panomphaeus, Gr. ?.]
   Uttering ominous or prophetic voices; divining. [R.]
   [1913 Webster]

         We want no half gods, panomphean Joves.  --Mrs.
                                                  Browning.
   [1913 Webster]