Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praedātĭo, ōnis, f. [praedor], a taking of booty, plundering, pillaging (post-Aug.).
In plur.: latrociniis ac praedationibus infestato mari, Vell. 2, 73, 3; Tac. A. 12, 29.
In sing., Lact. 5, 9; Vulg. Isa. 9, 5.