First attested around 1439. From Middle English abjuracioun, from LatinabiÅ«rÄtiÅ (“forswearing, abjuration"), from ab (“from, away from") + iÅ«rÅ (“swear or take an oath"), from iÅ«s (“law, right, duty"). Compare French abjuration.
English Wiktionary. Available under CC-BY-SA license.
He resided at Cambridge, teaching and taking occasional duty until the accession of George I., when his conscience forbade him to take the oaths of allegiance to the new government and of abjuration of the Stuarts.
To receive Queen Christina's abjuration of Protestantism.
The direct result of this investigation is not known, but it is impossible to disconnect from it the promulgation by Pope Alexander V., on the 20th of December 1409, of a bull which ordered the abjuration of all Wycliffite heresies and the surrender of all his books, while at the same time - a measure specially levelled at the pulpit of Bethlehem chapel - all preaching was prohibited except in localities which had been by long usage set apart for that use.
During a visit to Geneva in 1754 Rousseau saw his old friend and love Madame de Warens (now reduced in circumstances and having lost all her charms), while after abjuring his abjuration of Protestantism he was enabled to take up his freedom as citizen of Geneva, to which his birth entitled him and of which he was proud.
The Fihrist reckons seven principal works of Mani, six being in the Syriac and one in the Persian language; regarding some of these we also have information in Epiphanius, Augustine, Titus of Bostra, and Photius, as well as in the formula of abjuration (Cotelerius, PP. Apost.