(by restriction) a perfluoroalkyl substance / (by restriction) a polyfluoroalkyl substance

plural of PFA

Initialism of Paper Football Association. / Initialism of Pacific Film Archive. / Initialism of Police Federation of Australia.

(chemistry) Abbreviation of paraformaldehyde. / Abbreviation of polyfluoroalkyl. / Initialism of physical fitness assessment, used to determine physical fitness standards in the United States Navy

Initialism of please find attached.

plural of PFAS