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firn.

A type of old snow which has gone through multiple thaw and refreeze cycles and thus is made of numerous small icy grains, though it is not nearly as saturated with water as snowcone slush is; can be hard or somewhat soft depending on recent and current weather conditions.

4 characters1 syllables approx.English language

Meaning & usage

noun/fɪə(ɹ)n/UK/fɪɹn/US/fɪəɹn/US
  1. A type of old snow which has gone through multiple thaw and refreeze cycles and thus is made of numerous small icy grains, though it is not nearly as saturated with water as snowcone slush is; can be hard or somewhat soft depending on recent and current weather conditions.

    countable · uncountable
Where this word comes from

Borrowed from German Firn, from Alemannic German firn (“last year's”), from Old High German firni (“old”), from Proto-West Germanic [Term?], from Proto-Germanic *firnijaz, *fernaz (“foregoing, previous”), from Proto-Indo-European *per- (“forth, forward, across, through”); cognate with Old English fyrn (“former”), Old Norse forn (“old”), and Gothic 𐍆𐌰𐌹𐍂𐌽𐌴𐌹𐍃 (fairneis, “old”).

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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.