ˌmiscompuˈtation [mis-1 4.] Miscalculation, misreckoning. 1647Clarendon Hist.Reb. ii. §71 A very gross miscomputation.a1674Ibid. viii. §2. 1728 Morgan Algiers I. iv. 116 Many Writers..make great Miscomputations in their References of the Hejira to our Aera.