Black's Law Dictionary (2nd edition)dictionaries

Populiscitum

Lat. In Roman law. A law enacted by tbe people; a law passed by an assembly of the Roman people, in the eomitia centuriata, on the motion of a sena-tor; differing from a plebiscitum, in that the latter was always proposed by one of the tribunes

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