- A.C.
- 1. Anno Christi, the year of A/C2. Abbreviation used by accountants and bookkeepers meaning "account." As used in a check, it has been held not a direction to the bank to credit the amount of the check to the person named, but rather a memorandum to identify the transaction in which the check was issued
Black's law dictionary. HENRY CAMPBELL BLACK, M. A.. 1990.