every three weeks.
three times a week.
occurring or appearing every three weeks.
occurring or appearing three times a week.
noun, plural tri·week·lies.
a triweekly publication.
Origin of triweekly
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for triweekly
Contemporary Examples of triweekly
Triweekly newspapers—that is, three times a week—were also not unusual at the time.‘New York’ Mag & the Cruel Double Meaning of ‘Biweekly’
December 2, 2013
Do you receive bi- or triweekly emails reminding you of these facts?Why Investors—but Not Consumers—Love LinkedIn
August 27, 2012
Historical Examples of triweekly
every three weeks
three times a week
noun plural -lies
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