Black's Law Dictionary (2nd edition)dictionaries

Institutio Hsredis

Lat. In Ro-man law. The appointment of the hares in the will. It corresponds very nearly to the nomination of an executor in English law. without such an appointment the will was void at law, but the prator (i. e., equity) would, under certain circumstances, carry out the inteutlons of the testator. Brown

Source: Black’s Law Dictionary 2nd Ed (1910)