De fide (of the faith) is a "theological note" or "theological qualification" that indicates that some religious doctrine is an essential part of Catholic faith and that denial of it is heresy.Karl Rahner, Theological Notes, in Encyclopedia of Theology
网络释义
1、该作信条遵守的
... De facto subjectee 事实上的国民 De fide 该作信条遵守的 De his qui notantur infamia 被宣布不名誉、破廉耻的人 ...