Dictionary.com
definitions
  • synonyms

air frost

noun
  1. the deposition of ice condensed from water vapour in the atmosphere on the surface when the air temperature is below 0°C
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012