Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sē-jŭgo, āvi, ātum, 1, v. a., to disjoin, part, separate, divide (very rare; mostly in part. pass.): quae specialiter antea sejugabantur, Macedonum nomini contributae factae sunt corpus unum, Sol. 9, § 1: si spiritus corpore suo semel fuerit sejugatus, App. M. 6, p. 180: (animi partem) non esse ab actione corporis sejugatam, * Cic. Div. 1, 32, 70: verba ab ordine suo, App. Mag. p. 325, 40: singulis granis rite dispositis atque sejugatis, id. M. 6, p. 177, 15.