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subatmospheric

American  
[suhb-at-muhs-fer-ik, -feer-] / ˌsʌb æt məsˈfɛr ɪk, -ˈfɪər- /

adjective

  1. (of a quantity) having a value lower than that of the atmosphere.

    subatmospheric temperatures.

Etymology

Origin of subatmospheric

First recorded in 1940–45; sub- + atmospheric

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.