Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word praeiacio could not be parsed. Trying a normal dictionary lookup:
prae-ĭcĭo (prae-jăcĭo or praejĭcĭo, Fest. s. v. pone, p. 249 Müll.), jēci, jactum, 3, v. a., to cast or throw up in front (post-Aug.).
prae-jăcĭo, v. praeicio.