subzero

adjective

sub·​ze·​ro ˌsəb-ˈzē-(ˌ)rō How to pronounce subzero (audio)
-ˈzir-(ˌ)ō
variants or sub-zero
1
: registering less than zero on some scale (especially the Fahrenheit scale)
subzero temperatures
2
: characterized by or suitable for subzero temperatures
subzero winters
sub-zero snow boots
Here the altitude was almost a mile and a half above sea level and there was already hard frost in the mornings. With the first storm, the mornings would be subzero.Tony Hillerman

Examples of subzero in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But scientists tracking polar bears in the Arctic face more extreme hurdles: subzero temperatures, hard-to-reach locations, and a changing landscape that can make the bears hard to find and follow. Bygennaro Tomma, science.org, 27 Feb. 2025 Rescuers working in subzero conditions and bracing winds searched the rubble on Wednesday after a strong quake in Tibet toppled thousands of houses in a remote area near the northern foothills of Mount Everest. Tiffany May, New York Times, 8 Jan. 2025 The weather in Fort Lauderdale Tuesday night — clear skies and 69 degrees — was entirely different from the frigid, subzero conditions in Kansas City a week earlier, but the result was the same, another win for Inter Miami against Sporting KC in Round 1 of the Concacaf Champions Cup. Michelle Kaufman, Miami Herald, 26 Feb. 2025 After an earthquake in Tibet, rescuers worked in subzero conditions to find survivors. The Staff Of The Morning, New York Times, 8 Jan. 2025 See All Example Sentences for subzero

Word History

First Known Use

1887, in the meaning defined at sense 1

Time Traveler
The first known use of subzero was in 1887

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Cite this Entry

“Subzero.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subzero. Accessed 23 Mar. 2025.

Kids Definition

subzero

adjective
sub·​ze·​ro
ˌsəb-ˈzē-rō
: being or marked by temperature below zero

More from Merriam-Webster on subzero

Last Updated: - Updated example sentences
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