borehole

noun

bore·​hole ˈbȯr-ˌhōl How to pronounce borehole (audio)
Synonyms of boreholenext
: a hole bored or drilled in the earth: such as
a
: an exploratory well
b
chiefly British : a small-diameter well drilled especially to obtain water

Examples of borehole in a Sentence

Recent Examples on the Web
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On Thwaites itself, part of the team will try today to drop a fiber-optic cable through a 3,200-foot borehole in the ice, near the glacier’s grounding line, where the ocean is eating away at it from below. Christian Elliott, The Atlantic, 31 Jan. 2026 Positioning deep boreholes as a viable alternative for nuclear waste disposal, Deep Isolation has become the first company to actively develop and test this approach. Bojan Stojkovski, Interesting Engineering, 18 Jan. 2026 Deep Fission’s early regulatory filings acknowledge these challenges, noting that the deep borehole complicates compliance around monitoring and visual inspection, and that additional guidance will be required for remote operation. IEEE Spectrum, 20 Nov. 2025 In Greenpoint, Brooklyn, an eight-hundred-and-thirty-four-unit apartment complex that’s under construction has its heating and cooling provided through three hundred boreholes, none much deeper than about a hundred and fifty metres. Rivka Galchen, New Yorker, 17 Nov. 2025 See All Example Sentences for borehole

Word History

First Known Use

1708, in the meaning defined above

Time Traveler
The first known use of borehole was in 1708

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Cite this Entry

“Borehole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/borehole. Accessed 7 Feb. 2026.

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