Every now and then, someone asks "what does EF and OF mean ? " So perhaps we need a thread for that, since we abbreviate those terms here in our discussions.
I’ll start with just a few of these terms so others can contribute. And of course, we won’t limit it to abbreviations. Common Latin phrases welcome as well.
OF = Forma ordinaria, or, Ordinary Form of the Mass. This is the most widely used form of the Mass today. The Roman Missal is used for this form of the Mass.
EF = Forma extraordinaria, or Extraordinary form of the Mass. The 1962 Roman Catholic Missal is used for this Mass.
SP = the Apostolic Letter “Summorum Pontificum”, a Motu Proprio issued by Benedict XVI concerning the EF ewtn.com/library/papaldoc/b16SummorumPontificum.htm
Deus vult = Latin for “God Wills It !”