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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Most of the time, Wisconsinites are best known for their love of cheese curds, beers and braving subzero temperatures at Lambeau Field.

From The Wall Street Journal • Feb. 11, 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

His face ached from the subzero cold and the wind cut into his wet body like a long sharp knife going to the heart of him with pain.

From "Native Son" by Richard Wright

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