[hawr-frawst, -frost, hohr-]
See more synonyms for hoarfrost on Thesaurus.com

Origin of hoarfrost

First recorded in 1250–1300, hoarfrost is from the Middle English word hor-frost. See hoar, frost
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for hoarfrost

ice, freeze, hoarfrost, hoar, iciness, frigidity, drop, rime, blight, dip, wintriness

Examples from the Web for hoarfrost

Historical Examples of hoarfrost

British Dictionary definitions for hoarfrost


  1. a deposit of needle-like ice crystals formed on the ground by direct condensation at temperatures below freezing pointAlso called: white frost
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

Word Origin and History for hoarfrost

c.1300, hore-forst; see hoar + frost (n.).

Online Etymology Dictionary, © 2010 Douglas Harper

hoarfrost in Science


  1. Frozen dew that forms a white coating on a surface.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.