Wiktionary

pyramidal

English

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WOTD – 23 July 2026

Etymology

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From Middle English piramidal, piramydale, from Medieval Latin pȳramidālis.[1][2] By surface analysis, pyramid +‎ -al.

Pronunciation

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Adjective

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pyramidal (not comparable)

  1. (geometry) Pyramid-shaped.
    • 1912, Arthur Conan Doyle, “‘It’s Just the very Biggest Thing in the World’”, in The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC, page 49:
      At one point was an isolated pyramidal rock, crowned by a great tree, which appeared to be separated by a cleft from the main crag.
    • 1960 December, Voyageur, “The Mountain Railways of the Bernese Oberland”, in Trains Illustrated, page 752:
      Below is the deep abyss of the Lauterbrunnen valley, and at its head a stately semi-circle of mountains, with the pyramidal Lauterbrunnen Breithorn as the centre-piece.
    • 2023 March 22, Dr Joseph Brennan, “Grand buildings on the list... and lost: Greenock Princes Pier”, in RAIL, number 979, page 52:
      Among its attractive features were decorative, tile-hung Italianate towers with pyramidal roofs.
    1. (crystallography) Tetragonal.

Derived terms

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Translations

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Noun

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pyramidal (plural pyramidals)

  1. (anatomy) One of the carpal bones.

Derived terms

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See also

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References

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  1. ^ “pīramidāl, adj. and n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
  2. ^ “pyramidal, adj. and n.”, in OED Online  ⁠, Oxford: Oxford University Press, launched 2000.

French

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Etymology

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From pyramide +‎ -al.

Pronunciation

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Adjective

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pyramidal (feminine pyramidale, masculine plural pyramidaux, feminine plural pyramidales)

  1. pyramidal

Derived terms

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Further reading

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