Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sēlectĭo, ōnis, f. [seligo], a choosing out, choice, selection (Ciceron.): cum virtutis hoc proprium sit, earum rerum, quae secundum naturam sint, habere delectum: qui omnia sic exaequaverunt, ut in utramque partem ita paria redderent, uti nullā selectione uterentur, virtutem ipsam sustulerunt, Cic. Fin. 3, 4, 12; cf.: virtutem rerum selectione exspoliare, id. ib. 2, 13, 43; 3, 6, 20: vitiorum, id. Leg. 3, 10, 23.