critical region

noun

: the set of outcomes of a statistical test for which the null hypothesis is to be rejected

Examples of critical region in a Sentence

Recent Examples on the Web
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The careful concealment and exposure of critical regions may be a key factor in the virus’ success, suggesting that Marburg virus has evolved to avoid detection while still allowing rapid entry. William A. Haseltine, Forbes.com, 6 Apr. 2026 Oil prices rose sharply when market trading began Sunday as traders bet that supply from the critical region would slow or stop. Cara Anna, Chicago Tribune, 2 Mar. 2026 And scientists say the moves further threaten to erode the country’s research dominance, this time in the Antarctic, one of the most critical regions for studying rapid change and climate risks, like sea-level rise. Evan Bush, NBC news, 1 Sep. 2025 These issues make solar energy unreliable, if not impossible, in some of the most critical regions. Michelle L.d. Hanlon, The Conversation, 8 Aug. 2025 In each of these cases, success meant cultivating favorable balances of power in critical regions. A. Wess Mitchell, Foreign Affairs, 22 Apr. 2025 Harris hopes to shore up her campaign’s standing across the upper Midwest, a critical region in presidential politics that often serves as a buffer for Democrats seeking the White House. Jeff Barker, Baltimore Sun, 6 Aug. 2024

Word History

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of critical region was in 1933

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Cite this Entry

“Critical region.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/critical%20region. Accessed 4 Jul. 2026.

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