downhole

D2O1W4N1H4O1L1E1

adjective

Located in the drilled bore of an oil well either underground or undersea.

OriginEnglish hole ← Middle English hole ← Old English hol →
UncommonScrabble 15
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Meanings

adjective

alternative down-hole

  1. oil industryLocated in the drilled bore of an oil well either underground or undersea.

    In the work over, part of the new "string" was a down-hole titanium gauge.

    2005, Paul Carter, Don't Tell Mum I Work on the Rigs, Crows Nest: Allen and Unwin, page 44
    1 more example

    Pressure readings are taken downhole next to the feed zone and the total flow is measured on the surface using a separator.

    2015, Ronald DiPippo, Geothermal Power Plants
noundownhole (plural downholes)

plural downholes · alternative down-hole

    Origin

    1. Englishdown-
    2. Proto-Germanic*hulaz
    3. Proto-Germanic*hulą
    4. Proto-West Germanic*hol
    5. Old Englishhol
    6. Middle Englishhole
    7. Englishhole
    8. Englishdownhole

    From down- + hole.

    Full word history & related roots →
    Cite this entry
    APA

    downhole. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/downhole

    MLA

    “downhole.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/downhole. Accessed November 3, 2026.

    Chicago

    WatkinsX Dictionary, s.v. “downhole,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/downhole.

    Source: downhole on Wiktionary, CC BY-SA 4.0.