subzero

adjective
sub·​ze·​ro | \ ˌsəb-ˈzē-(ˌ)rō How to pronounce subzero (audio) , -ˈzir-(ˌ)ō\
variants: or sub-zero

Definition of subzero

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

First Known Use of subzero

1887 , in the meaning defined at sense 1

Keep scrolling for more

Learn More about subzero

Dictionary Entries near subzero

subworld

subwriter

subxerophilous

subzero

subzone

suc

succ

Statistics for subzero

Look-up Popularity

Time Traveler for subzero

The first known use of subzero was in 1887

See more words from the same year

Keep scrolling for more

More Definitions for subzero

subzero

adjective

English Language Learners Definition of subzero

: below zero degrees : extremely cold

More from Merriam-Webster on subzero

Rhyming Dictionary: Words that rhyme with subzero

Thesaurus: All synonyms and antonyms for subzero

Comments on subzero

What made you want to look up subzero? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a sum of money that is sent as a payment

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!