One of the mysteries of the English language finally explained.
= ad limina apostolorum.
Designating or relating to the obligatory regular visits made to the Holy See by certain members of the Church hierarchy to report to the Pope. Chiefly in "ad limina visit".
Mid 19th century. Shortened from ad limina apostolorum.
ad limina/ˌad ˈlɪmɪnə/
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