1
a
: the process of freezing
b
: a covering of minute ice crystals on a cold surface
also
: ice particles formed from a gas
c
: the temperature that causes freezing
2
a
: coldness of deportment or temperament : an indifferent, reserved, or unfriendly manner
b
: failure
the play was … a most dreadful frost—
Arnold Bennett
Arnold Bennett
frosted; frosting; frosts
1
a
: to cover with or as if with frost
especially
: to put icing on (cake)
b
: to produce a fine-grained slightly roughened surface on (such as metal or glass)
2
: to injure or kill (plants) by frost
3
: to make angry or irritated
that really frosts me
: to become frosted
Examples of frost in a Sentence
Noun
The grass was covered with frost.
Frost formed on the window.
These plants should bloom until the first frost of the season.
We had an early frost.
Verb
The cold had frosted the windows.
I have to frost the birthday cake.
Recent Examples on the Web
Ca Weather Bot, Sacbee.com, 28 Oct. 2025
Cooler, drier air will lead to clearing skies across the region late in the week, but morning temperatures from Thursday through Sunday are expected to dip low enough to allow frost to form.
—Robert A. Cronkleton, Kansas City Star, 28 Oct. 2025
Katlyn Moncada, Better Homes & Gardens, 25 Oct. 2025
Taylor Patterson, a meteorologist with the National Weather Service in Milwaukee/Sullivan, said the National Weather Service issues frost and freeze warnings in the spring and fall seasons for farmers and horticulturalists to protect any sensitive vegetation.
—Kelli Arseneau, jsonline.com, 24 Oct. 2025
See All Example Sentences for frost
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show current usage.
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Noun
In some cases, the frost is severe enough to end the growing season and is then referred to as a 'killing frost'.
—Ca Weather Bot, Sacbee.com, 28 Oct. 2025
Cooler, drier air will lead to clearing skies across the region late in the week, but morning temperatures from Thursday through Sunday are expected to dip low enough to allow frost to form.
—Robert A. Cronkleton, Kansas City Star, 28 Oct. 2025
Verb
When ready to use, let frosting stand at room temperature until soft and spreadable.
—Katlyn Moncada, Better Homes & Gardens, 25 Oct. 2025
Taylor Patterson, a meteorologist with the National Weather Service in Milwaukee/Sullivan, said the National Weather Service issues frost and freeze warnings in the spring and fall seasons for farmers and horticulturalists to protect any sensitive vegetation.
—Kelli Arseneau, jsonline.com, 24 Oct. 2025
See All Example Sentences for frost
Cite this Entry
“Frost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frost. Accessed 4 Nov. 2025.
Copy CitationKids Definition
frost
1 of 2 noun1
: the temperature that causes freezing
2
: a covering of tiny ice crystals on a cold surface
frost
2 of 2 verb1
a
: to cover with or as if with frost
especially
: to put icing on (as cake)
b
: to give a surface that looks like frost to
2
: to injure or kill by frost : freeze
Biographical Definition
Frost
biographical name
Robert Lee 1874–1963 American poet
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