PCA

Meanings

1. Abbreviation of Proto-Central Algonquian.
2. Abbreviation of Posse Comitatus Act, the U.S. law called "Posse Comitatus Act", 20 Stat. 152 aka 18 U.S.C. § 1385.
3. Initialism of Progressive Citizens of America.

1. Abbreviation of propulsion controlled aircraft (system/unit), an aircraft with a control system with two or more engines arrayed abreast, allowing descent, ascent, turns by adjusting the throttle control to the engines (sometimes used attributively).
2. Abbreviation of principal components analysis.
3. Abbreviation of patient-controlled analgesia; palliator.
4. Initialism of posterior cerebral artery.
5. Initialism of printed circuit assembly.