English abbreviations from ac to aca
- AC (alternating current)
- A.C. (Auditor Camerae (Auditor of the Papal Treasury))
- AC/A (Accommodative convergence / Accommodation ratio)
- AC/RC (Active Components/Reserve Components)
- AC 0/4 (Grade 0 anterior chamber angle)
- AC1 (Aircraftman 1st Class)
- AC 1/4 (Grade 1 anterior chamber angle)
- AC-130 (Spectre gunship based on the C-130 cargo aircraft)
- AC2 (Aircraftman 2nd Class)
- AC 2/4 (Grade 2 anterior chamber angle)
- AC2F (Automated Command and Control Facility)
- AC2MP (Army Command and Control Master Plan)
- AC2P (Advanced Command and Control Program)
- AC 3/4 (Grade 3 anterior chamber angle)
- AC 4/4 (Grade 4 anterior chamber angle)
- AC97 (Audio Codec 97)
- ACA (Affordable Care Act)
