Meaning of PCA | Babel Free

Definitions

1. Abbreviation of Proto-Central Algonquian.
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2. 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).
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3. Abbreviation of Posse Comitatus Act, the U.S. law called "Posse Comitatus Act", 20 Stat. 152 aka 18 U.S.C. § 1385.
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4. Abbreviation of principal components analysis.
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5. Initialism of Progressive Citizens of America.
   US, abbreviation, alt-of, historical, initialism
6. Abbreviation of patient-controlled analgesia; palliator.
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7. Initialism of posterior cerebral artery.
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8. Initialism of printed circuit assembly.
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Examples

“The PCA was demonstrably a Communist-front organization, and most of the Hollywoodites whom it rallied to its support were members of the Communist Party, some of them having been notorious as such for many years.”

CEFR level