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.
He brought with him, for the refutation of calumnious reports circulated by his enemies, a written certificate from Cardinal Bellarmin, to the effect that no abjuration had been required of or penance imposed upon him.
The legend according to which Galileo, rising from his knees after repeating the formula of abjuration, stamped on the ground, and exclaimed, "Eppur si muovel" is, as may readily be supposed, entirely apocryphal.
What had been a slow movement between I585 and 1592 was quickened by Henry IV.s abjuration of Protestantism at Saint-Denis on the 23rd of July 1593.
Early in 1858 the House of Commons, by an increased majority, passed a bill amending the oaths imposed by law on members of both Houses, and directing the omission of the words on the true faith of a Christian from the oath of abjuration when it was taken by a Jew.
He was recalled in 1621, and began to be instructed in the Roman Catholic religion, though his abjuration of Protestantism was deferred until the end of 1622.