arationarch.rare.|əˈreɪʃən| [ad. L. arātiōn-em, n. of action f.arāt-ppl. stem of arāre to plough: see -tion.] Ploughing; tillage. 1663Cowley Agric.Wks. 1710 II. 710 First, Aration..Secondly, Pasturage.1813Vancouver Agric. Devon 13 Of sufficient depth for the purposes of aration.