agriculture UK /ˈæɡ.ɹɪˌkʌl.t͡ʃə/US /ˈæɡ.ɹɪˌkʌl.t͡ʃɚ/ noun1 •The art or science of cultivating the ground, including the growing and harvesting of crops, and the rearing and management of livestock. formsagricultures