Webster 1913 Edition



, fr.
space of three days;
Lasting three lays; also, happening every third day.

Webster 1828 Edition



[L. triduum; tres and dies, day.] Lasting three days, or happening every third day. [Little used.]

Definition 2023





triduan (not comparable)

  1. Lasting three days.
    • 1839, Charles Augustus Murray, Travels in North America During the Years 1834, 1835 & 1836, Volume II, page 318,
      It seems to be a kind of understanding or unwritten compact between the orator and the audience, that he be allowed to talk without interruption as much as he pleases, so long as they are not called upon to listen to one word that he utters. Accordingly, during the delivery of one of these triduan discourses, the Senate of the United States wears the appearance of an orderly well-regulated reading-room; the members being comfortably seated in their arm-chairs, some looking over and answering private letters, some exchanging a few words in a low whisper with each other, or with friends in the strangers' gallery, others reading a newspaper, and all evincing the most philosophic indifference to the tedious harangue and the exhaustless lungs of the orator.
    • 1841, Robert Thomas Hampson, Medii Evi Kalendarium: Or Dates, Charters, and Customs of the Middle Ages, page 247,
      These Litanies are also called Rogations, and Gang Days among the Saxons, and Gang Dawes by old English writers. They are triduan, and take place on the three days before Ascension Day.
    • 1851, James Dennistoun, Memoirs of the Dukes of Urbino, Volume 3, page 103,
      Faenza having escaped their brutality by denying them entrance, its citizens testified their gratitude for the exemption, by instituting an annual triduan thanksgiving, and dotation of two of their daughters.
    • 1920, American Journal of Philology, Volume 41, page 43,
      Such tents of assignation are still in use in the pilgrimages of Islam at Mecca, and are known to have been constructed and afterwards burned on the ‘tent-day’ of the triduan festival of Isis at Tithorea in Phocis.
    • 1930, Archaeological Institute of America, American Journal of Archaeology, page 122,
      To consider one example of his method, the connecting link of his whole argument involves his postulates of biduan and triduan periods and so their relation to the Hewbrew hebdomads.
  2. Happening every third day.
    • 1810 January—June, The Universal Magazine, New Series, Volume XIII, page 103,
      The diurnal or triduan prints are too expensive for every individual, and in consequence the weekly ones have been established; [] .


  • (lasting three days): three-day, three day
  • (happening every third day): tridaily, thrice-daily, thrice daily



triduan (plural triduans)

  1. An event lasting three days.
    • 1870, Charles George Deuther, The Life and Times of the Rt. Rev. John Timon, D. D., page 232.
      Pius IX has defined the sacred dogma, and the Catholic world has rejoiced, and Triduans, that is, three days of special joy and holy exercises, have been celebrated throughout the wide world, and continue to be celebrated in honor of the glad event.
    • 1891, Henri Gaidoz, Henry Arbois de Jubainville, Joseph Loth, Paul Le Nestour, Revue Celtique, Volume 12, page 433,
      Then they lift their hands up to heaven, and they give a blessing to God and Patrick with the saints of Ireland, and to every soul that is in the assembly of these triduans, whether alone or in a multitude.


See also