ad perpetuam remanentiam
ad perpetuam remanentiam (ad p[schwa]r-pech-oo-[schwa]m rem-[schwa]-nen-shee-[schwa]m). [Law Latin] Hist. To remain forever. • When a vassal surrendered the right of property to the superior ad perpetuam remanentiam, the surrender was in favor of the superior, as distinguished from a transfer in favorem, in which the vassal transferred the property to the superior to be regranted in favor of a purchaser.