Incorrect reckoning or calculating of accounts; (gen.) miscalculation; an instance of this.

Miscalculation; an instance of this; (Bookkeeping) incorrect addition. Obsolete.

A miscalculation, an error. Obsolete. rare.

= miscomputation, n.

Erroneous counting; misreckoning, miscalculation.

Miscalculation; (now usually) spec. wrong or faulty computation; an instance of this. Formerly also: †a misjudgement (obsolete).

Wrong or faulty calculation, estimation, or reckoning; misjudgement. Also: an instance of this.