triannual

== English == === Etymology === From tri- +‎ annual. === Adjective === triannual (not comparable) Happening three times each year. ==== Usage notes ==== To avoid confusion between "triennial," once every three years, and "triannual," three times in one year, it is often better to substitute a less ambiguous phrase such as "three times a year" or "every four months." ==== Translations ==== === See also === triennial (every three years) which is sometimes confused with triannual (usually every four months). biennial (every two years). biannual (twice a year). semiannual (also twice a year).