| Subject | English | Thesaurus |
| abbr., f.trade. | A/C | alternating current |
| abbr., energ.ind. | a.c. fail | power fail (MichaelBurov) |
| abbr., energ.ind. | a.c. fail | power failure (MichaelBurov) |
| abbr., electr.eng. | a.c. fail | a.c. failure (MichaelBurov) |
| abbr., textile | A/C felt | asbestos cement felt |
| abbr., law | A.C.L.U. | American Civil Liberties Union |
| abbr., f.trade. | A/C No. | account No. |
| abbr., law | A.C.T.A. | administrator cum testamento annexo |
| abbr., f.trade. | A.C.W.C. | actual clean wool content |
| abbr., law | A.F.D.C. | Aid to Families with Dependent Children |
| abbr., law | A.F.L.C.LO. | American Federation of Labor and Congress of Industrial Organization |
| abbr., law | A.P.C. | Alien Property Custodian |
| abbr., law | C.A | commission agent |
| abbr., law | C.A. | commercial agency |
| abbr., law | C.A.A. | Clean Air Acts |
| abbr., law | C.A.B | Civil Aeronautics Board |
| abbr., law | C.A.F | Cost and freight |
| abbr., law | C.G.S.A. | Carriage of Goods by Sea Act |
| abbr., f.trade. | C.l.A. | cash in advance |
| abbr., publ.secur. | F.A.C. | firearms acquisition certificate |
| abbr., law | F.C.A. | Federal Credit Administration |
| abbr., law | F.C.A. | Farm Credit Administration |
| railw., abbr. | G.C.A. Transport Limited | GCAU |
| abbr., proj.manag. | LACTI stands for L- Leads Task, A- Approves task work product, C - Consulted on task, T- Tasked to do the work, I- Informed of the work product. | LACTI Chart (L – руководит задачей; A – утверждает результат; C – консультирует по задаче; T – несет ответственность за исполнение задачи; I – ставится в известность о результате Pani) |
| abbr., law | L.H.W.C.A. | Longshoremen's and Harbor Workers' Compensation Act |
| abbr., insur. | NOW a/c | Negotiable Order of Withdrawal |
| abbr., law | O.C.A.S. | Organization Central American States |
| abbr., law | R.F.C.A. | Reconstruction Finance Corporation Act |
| abbr., insur. | Super NOW a/c | Super Negotiable Order of Withdrawal |
| abbr., law | U.C.C.J.A. | Uniform Child Custody Jurisdiction Act |
| abbr., f.trade. | U.S.A.E.C. | United States Atomic Energy Commission |