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  1. every three weeks.
  2. three times a week.
  1. occurring or appearing every three weeks.
  2. occurring or appearing three times a week.
noun, plural tri·week·lies.
  1. a triweekly publication.

Origin of triweekly

First recorded in 1825–35; tri- + weekly
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for triweekly

Contemporary Examples

Historical Examples

  • There is a post office in the village, through which a triweekly mail passes to and from Natchez.

    The South-West

    Jonathon Holt Ingraham

  • He would hear no news but that which she translated from the triweekly French paper published in the city.

    Round the Block</p>

    John Bell Bouton

British Dictionary definitions for triweekly


adjective, adverb
  1. every three weeks
  2. three times a week
noun plural -lies
  1. a triweekly publication
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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