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FINNISH · A WORD WITH POSSIBILITIES

kaasu.

gas (state of matter)

5 characters2 syllables approx.Suomi language

Meaning & usage

noun/ˈkɑːsu/[ˈkɑ̝ːs̠u]
  1. gas (state of matter)

  2. gas pedal

  3. laughing gas (particularly as an intoxicant)

    colloquial
Where this word comes from

Borrowed from a Sami language (compare Southern Sami gaasoe (“cold mist”)), from Proto-Samic *kāsō, from Proto-Uralic *käsä (“dew”). Originally a dialectal word meaning “(cold) mist, fog”, adopted as an equivalent of gas by Finnish physician and author Samuel Roos in 1845, by phonetic similarity with Dutch gas (whence words in many other European languages, such as English gas).

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kaasu studiokaasu workshello, kaasu

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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.