hoar frost

短语

树冰, 冰霜, 白霜

发音

UK /ˈhɔː fɹɒst/
US /ˈhoɹ ˌfɹɑst/

词形变化

hoar frosts 复数

别名

hoarfrost

释义与例句

n.
  1. 1.

    Originally, any frozen dew forming a white deposit on exposed surfaces.

    可数 不可数
  2. 2.

    Water vapour which has undergone deposition or desublimation (“transformation directly into ice crystals without first turning into liquid water”) when the air is cold and moist to form a white deposit on exposed surfaces.

    霜

    可数 不可数 气象

词汇关系

名词

同义词 3

frost hoar rime

上位词 2

ice water ice

词源

PIE word *prustós From Middle English hore frost, horfrost [and other forms], from hor (“grey; greyish-white”, adjective) (from Old English hār (“grey”), ultimately from Proto-Indo-European *(s)ḱeh₃- (“darkness; shadow”)) + frost (“cold spell, freezing weather, frost; hoar-frost; rime”) (from Old English frost, forst, ultimately from Proto-Indo-European *prustós (“frost”)). The English word is analysable as hoar (“greyish-white; white”, adjective) + frost.

来源：wiktionary