PCA

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PCA

proper noun

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

noun PCAs

abbreviation 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).
abbreviation Abbreviation of principal components analysis
abbreviation Abbreviation of patient-controlled analgesia; palliator.
abbreviation, initialism Initialism of posterior cerebral artery
abbreviation, initialism Initialism of printed circuit assembly
Similar: PCBA

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MLA

"PCA." Wiktionary, via Micwyn, micwyn.com/word/pca. Accessed 6 Nov. 2026.

APA

PCA. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/pca

Chicago

"PCA." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/pca.

BibTeX

@misc{pca_2026,
  title = {PCA},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/pca},
  urldate = {2026-11-06}
}