WordReference Random House Unabridged Dictionary of American English © 2025
tri•week•ly
(trī wēk′lē),USA pronunciation adv., adj., n., pl. -lies.
adv.
adj.
n.
adv.
- every three weeks.
- three times a week.
adj.
- occurring or appearing every three weeks.
- occurring or appearing three times a week.
n.
- a triweekly publication.
- tri- + weekly 1825–35
'triweekly' also found in these entries (note: many are not synonyms or translations):