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subzero

British  
/ sʌbˈzɪərəʊ /

adjective

  1. (esp of temperature) lower or less than zero

"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

Example Sentences

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People are also trying cryotherapy, which involves blasting the body with subzero temperatures to reduce inflammation and speed muscle recovery.

From The Wall Street Journal Mar. 17, 2026

That’s partly because heat pumps work by extracting heat from outdoor air, compressing it and piping it indoors, a thermal magic trick that’s harder to perform in places with subzero winters.

From Los Angeles Times Mar. 1, 2026

The city is expected to be hit particularly hard with 18-24 inches of snow expected to fall in the metro area and temperatures dropping into the 20s F and subzero C.

From BBC Feb. 22, 2026

Hundreds of protesters stood outside in subzero temperatures and made as much noise as possible—banging pots, blowing whistles, drumming on buckets, blowing trombones and trumpets.

From Slate Feb. 11, 2026

Zhenya Timofeyeva, the deputy commander of the 587th, was out in the subzero wind clearing snow from the Pe-2s when she was called back to her new and unfamiliar headquarters to receive a transmitted message.

From "A Thousand Sisters" by Elizabeth Wein

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