Lewis Short
(adjective) : prōdĭgĭālis, e, prodigium.
* Unnatural, strange, wonderful, portentous, prodigious (post-class.): res,Amm. 25, 10, 1: caput,Claud. in Ruf. 2, 434: signa,Prud. Ham. 467.—Adverb.: prodigiale canens,Stat. Th. 7, 403: cometes prodigiale rubens,Claud. Rapt. Pros. 1, 232.
* That averts bad omens (Plautin.): prodigialis Juppiter,Plaut. Am. 2, 2, 107.—Adv.: prōdĭgĭā-lĭter, unnaturally, in a strange manner, prodigiously (poet. and in post-Aug. prose): variare rem unam,Hor. A. P. 29: accidere,Col. 3, 3, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary