firn

n. 粒雪, 积雪

发音

UK /fɪə(ɹ)n/
US /fɪɹn/
US /fɪəɹn/

词形变化

firns 复数 firns

释义与例句

n.
  1. 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.

    可数 不可数

词源

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”).

来源：wiktionary