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PFAS.

Acronym of perfluoroalkyl or polyfluoroalkyl substance (“a type of environmental pollutant”).

4 characters1 syllables approx.English language

Meaning & usage

noun/ˈpiːfæs/

  1. Acronym of perfluoroalkyl or polyfluoroalkyl substance (“a type of environmental pollutant”).

    abbreviation · acronym · alt-of · countable · uncountable

  2. Acronym of perfluoroalkyl or polyfluoroalkyl substance (“a type of environmental pollutant”). a perfluoroalkyl substance

    countable · uncountable

  3. Acronym of perfluoroalkyl or polyfluoroalkyl substance (“a type of environmental pollutant”). a polyfluoroalkyl substance

    countable · uncountable

  4. Initialism of pollen-food allergy syndrome.

    abbreviation · alt-of · initialism · uncountable
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.