Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
prae-signis, e, adj. [signum], distinguished before or above others, remarkable, illustrious, excellent (poet.): praesignia tempora cornu, Ov. M. 15, 611: praesignis facie, id. A. A. 3, 773; id. F. 6, 628: hastā, Stat. S. 4, 8, 12.