Definitions of triannual - OneLook Daniel Foster Published Apr 07, 2026 Definitions from Wiktionary (triannual)▸ adjective: Happening three times each year.triennial, triyearly, twice-yearly, yearly, thrice-monthly, trimonthly, triweekly, biyearly, sesquiennial, semesterly, more...▸ Words similar to triannual▸ Usage examples for triannual▸ Idioms related to triannual▸ Civic discussion about triannual (New!)▸ Popular nouns described by triannual▸ Words that often appear near triannual▸ Rhymes of triannual▸ Invented words related to triannual
