preheat
verb
pre·heat
(ˌ)prē-ˈhēt 
preheated; preheating; preheats
: to heat (something) beforehand
especially
: to heat (an oven) to a designated temperature before using for cooking
preheater
noun
Examples of preheat in a Sentence
Preheat the oven to 375 degrees before you put the roast in.
Recent Examples on the Web
While the oven preheats, boil some water in a large pot and cook lasagna noodles according to package directions.
—
Sarah Martens, Better Homes & Gardens, 5 Oct. 2025
When ready to bake, preheat oven to 375℉, and let lasagna stand at room temperature while oven preheats.
—Kimberly Holland, Southern Living, 3 Oct. 2025
To roast pepitas, follow the same initial steps (preheating your oven, tossing them in olive oil and seasonings, and arranging them on a baking sheet).
—Johna Burdeos, Health, 19 Sep. 2025
Integrating the exothermic Haber-Bosch process with electrolysis further raises system efficiency, since waste heat from compressors and ammonia synthesis can preheat feedwater.
—Aamir Khollam, Interesting Engineering, 16 Sep. 2025
See All Example Sentences for preheat
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Sarah Martens, Better Homes & Gardens, 5 Oct. 2025
When ready to bake, preheat oven to 375℉, and let lasagna stand at room temperature while oven preheats.
—Kimberly Holland, Southern Living, 3 Oct. 2025
To roast pepitas, follow the same initial steps (preheating your oven, tossing them in olive oil and seasonings, and arranging them on a baking sheet).
—Johna Burdeos, Health, 19 Sep. 2025
Integrating the exothermic Haber-Bosch process with electrolysis further raises system efficiency, since waste heat from compressors and ammonia synthesis can preheat feedwater.
—Aamir Khollam, Interesting Engineering, 16 Sep. 2025
See All Example Sentences for preheat
Cite this Entry
“Preheat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/preheat. Accessed 8 Oct. 2025.
Copy CitationKids Definition
preheat
verb
pre·heat
(ˈ)prē-ˈhēt
: to heat beforehand
preheat the oven to 400 degrees
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