noun: (military) Initialism of airspace control authority.
noun: (military) Initialism of airspace coordination area.
noun: (accounting) Initialism of associate chartered accountant.
noun: (anatomy) Initialism of anterior cerebral artery.
noun: (immunology) Initialism of anti-cardiolipin antibody.
noun: (immunology) Initialism of anti-centromere antibody.
noun: (immunology) Initialism of antigen-capture assay.
noun: (US, politics) Initialism of Affordable Care Act (“H.R. 3590”)., from the U.S. national law "Affordable Care Act" (Patient Protection and Affordable Care Act)
