Source : Webster's Revised Unabridged Dictionary (1913)

Agriculture \Ag"ri*cul`ture\ (?; 135), n. [L. agricultura; ager
   field + cultura cultivation: cf. F. agriculture. See {Acre}
   and {Culture}.]
   The art or science of cultivating the ground, including the
   harvesting of crops, and the rearing and management of live
   stock; tillage; husbandry; farming.

Source : WordNet®

agriculture
     n 1: a large-scale farming enterprise [syn: {agribusiness}, {factory
          farm}]
     2: the practice of cultivating the land or raising stock [syn:
        {farming}, {husbandry}]
     3: the federal department that administers programs that
        provide services to farmers (including research and soil
        conservation and efforts to stabilize the farming
        economy); created in 1862 [syn: {Department of Agriculture},
         {Agriculture Department}, {USDA}]
     4: the class of people engaged in growing food