Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ērādīcātĭo, ōnis, f. [eradico], a rooting out, Tert. Res. Carn. 27 fin.; Vulg. Isa. 37, 26; cf.: eradicationem posuisti me, i. e. an example of utter destruction, id. Thren. 3, 45.