[ frawst, frost ]
See synonyms for frost on
  1. a degree or state of coldness sufficient to cause the freezing of water.

  2. Also called hoarfrost . a covering of minute ice needles, formed from the atmosphere at night upon the ground and exposed objects when they have cooled by radiation below the dew point, and when the dew point is below the freezing point.

  1. an opaque coating of tiny, white, granular ice particles, formed on the walls or contents of a freezer by the condensation of water vapor;rime.

  2. the act or process of freezing.

  3. coldness of manner or temperament: We noticed a definite frost in his greeting.

  4. Informal. a coolness between persons.

  5. Informal. something that meets with lack of enthusiasm, as a theatrical performance or party; failure; flop.

  6. a milkshake, frappe, or similar drink: a chocolate frost.

verb (used with object)
  1. to cover with frost.

  2. to give a frostlike surface to (glass, metal, etc.).

  1. to ice (a cake, cookies, etc.).

  2. to bleach selected strands of (a person's hair) in order to create highlights.

  3. to kill or injure by frost: a freezing rain that badly frosted the tomato plants.

  4. to make angry: I was frosted by his critical comment.

verb (used without object)
  1. to become covered with frost (often followed by up or over): The windshield has frosted over.

  2. (of varnish, paint, etc.) to dry with a film resembling frost.

Idioms about frost

  1. degree of frost, British. the degree of temperature Fahrenheit below the freezing point: 10 degrees of frost is equivalent to 22°F.

Origin of frost

First recorded before 900; Middle English, Old English frost, forst; cognate with Old Saxon, Old High German, Old Norse frost; akin to freeze

Other words for frost

Other words from frost

  • frostless, adjective
  • frostlike, adjective
  • un·frost, verb (used with object)

Words Nearby frost

Other definitions for Frost (2 of 2)

[ frawst, frost ]

  1. Robert (Lee), 1874–1963, U.S. poet. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use frost in a sentence

British Dictionary definitions for frost (1 of 2)


/ (frɒst) /

  1. a white deposit of ice particles, esp one formed on objects out of doors at night: See also hoarfrost

  2. an atmospheric temperature of below freezing point, characterized by the production of this deposit

  1. degrees below freezing point: eight degrees of frost indicates a temperature of either –8°C or 24°F

  2. informal something given a cold reception; failure

  3. informal coolness of manner

  4. the act of freezing

  1. to cover or be covered with frost

  2. (tr) to give a frostlike appearance to (glass, etc), as by means of a fine-grained surface

  1. (tr) mainly US and Canadian to decorate (cakes, etc) with icing or frosting

  2. (tr) to kill or damage (crops, etc) with frost

Origin of frost

Old English frost; related to Old Norse, Old Saxon, Old High German frost; see freeze

Derived forms of frost

  • frostlike, adjective

British Dictionary definitions for Frost (2 of 2)


/ (frɒst) /

  1. Sir David (Paradine). born 1939, British television presenter and executive, noted esp for political interviews

  2. Robert (Lee). 1874–1963, US poet, noted for his lyrical verse on country life in New England. His books include A Boy's Will (1913), North of Boston (1914), and New Hampshire (1923)

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

Scientific definitions for frost


[ frôst ]

  1. A deposit of tiny, white ice crystals on a surface. Frost forms through sublimation, when water vapor in the air condenses at a temperature below freezing. It gets its white color from tiny air bubbles trapped in the ice crystals. See more at dew point.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.