in Ancient Architecture, a measure in length equal to 120 Roman feet. In Ancient Agriculture the word signified the length of one furrow, or the distance a plough goes before it turns.

Actus Intercinctalis, a space of ground four feet in breadth, left between the lands as a path or way.

Actus Major, or Actus Quadratus, a piece of ground in a square form, whose side was equal to 120 feet, equal to half the jugerum.

Actus Minimus was a quantity of land 120 feet in length and four in breadth.