OXFORD 9000
📚 noun • entry_id 38301

hoar frost

/ˈhɔː fɹɒst/
Meanings (ES + gloss)
cencellada • escarcha • helada blanca
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.
Hoar frost forms when water vapor sublimates^([sic]) onto a surface. It is the frozen equivalent of dew. […] Conditions leading to hoar frost formation include the movement of vapo…
This striking fact, of the lower temperature of the surface on which dew and hoarfrost are forming, it was always found difficult to explain; for the transition of a body from the…
Phrases
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