Jugerum

, or (the last form, as a neuter noun of the third declension, is very common in the oblique cases and in the plural) was a Roman unit of measurement of area, 240 pedes (Roman feet) or 71.0 m in length and 120 pedes or 35.5 m in breadth, containing therefore 28,800 pedes quadratum (Colum. R. R. v.i § 6; Quintil. i.18). That is 0.623 acre or 0.25 ha.