Middlesex

M3I1D2D2L1E1S1E1X8
UK/ˈmɪdl̩.sɛks/

proper noun

A former inland county of England, partly absorbed into the erstwhile County of London in 1889; finally abolished in 1965 and absorbed mainly into Greater London, the south-west corner of the county becoming Spelthorne Borough and included in Surrey. The whole county, in whatever form, had the Thames as its southern boundary.

CommonScrabble 20

Meanings

proper noun
  1. A former inland county of England, partly absorbed into the erstwhile County of London in 1889; finally abolished in 1965 and absorbed mainly into Greater London, the south-west corner of the county becoming Spelthorne Borough and included in Surrey. The whole county, in whatever form, had the Thames as its southern boundary.

    A station on the Middlesex bank [of the Thames] was provided to serve Hampton Wick.

    1958 June 28, J. Spencer Gilks, “Railway Development at Kingston-upon-Thames—1”, in Railway Magazine, page 450
  2. A number of places in the United States:
  3. The central of the three historical counties of Jamaica, bordered by the counties of Cornwall in the west and Surrey in the east; named for the English county.
  4. A locality in Central Coast council area, Kentish council area and the Meander Valley council area, northern Tasmania, Australia.
  5. A rural locality in the Shire of Manjimup, South West region, Western Australia.
  6. abbreviationellipsisEllipsis of Middlesex County.

Origin

  1. Old EnglishMiddelseaxan
  2. EnglishMiddlesex

From Old English Middelseaxan (literally “Middle Saxons”), which stood for both Middlesex and its people.

Full word history & related roots →
Cite this entry
APA

Middlesex. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/Middlesex

MLA

“Middlesex.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Middlesex. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “Middlesex,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/Middlesex.

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