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. [(anatomy) An artery that arises from the internal carotid artery, forms the anterior portion of the circle of Willis where it is linked to the artery on the opposite side by the anterior communicating artery, and passes on to supply the medial surfaces of the cerebrum.]
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)
