agrarian

Today, an acre is generally considered to be a unit of land measuring 43,560 square feet (4,047 square meters). Before that standard was set, it's believed that an acre represented a rougher measurement - the amount of land that could be plowed in one day with a yoke of oxen. Both acre and agrarian, derive from the Latin noun ager and the Greek noun agros, meaning "field." (You can probably guess that agriculture is another descendant.) Agrarian, first used in English in the 17th century, describes things pertaining to the cultivation of fields, as well as the farmers who cultivate them.