Definitions from Wiktionary (PsA)

▸ noun:  Initialism of polysialic acid. [(biochemistry) A polymeric form of sialic acid that is involved in cell adhesion]
▸ noun:  (medicine, immunology) Initialism of prostate-specific antigen. [(medicine) A glycoprotein enzyme secreted by the epithelial cells of the prostate gland and becoming part of the ejaculate; used in the diagnosis of prostate cancer.]
▸ noun:  Initialism of pressure-sensitive adhesive.
▸ noun:  Initialism of pressure swing adsorption.
▸ noun:  Initialism of public safety announcement. [An advertisement intended to benefit the public interest by raising awareness of a threat to public safety, and informing the public of preventative measures to take.]
▸ noun:  Initialism of public service announcement. [(broadcasting) An advertisement intended to serve the public interest by raising awareness of an issue, affecting public attitudes and potentially stimulating action.]
▸ noun:  (finance) Initialism of purchase and sale agreement.
▸ noun:  Initialism of Pacific Southwest Airlines.
▸ noun:  Initialism of Peugeot S.A., a French automaker.
▸ noun:  (Philippines) Initialism of Philippine Statistics Authority.
▸ noun:  (historical) Initialism of Phone-paid Services Authority.
▸ noun:  (medicine) Abbreviation of psoriatic arthritis.





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