Triennial is a related term of triannual.
As adjectives the difference between triannual and triennial
is that triannual is happening three times each year while triennial is happening every three years.
As a noun triennial is
a third anniversary.
triannual
English
Adjective
(-)
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".
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).
triennial
English
Adjective
(
-)
Happening every three years.
- triennial elections
-
Lasting for three years.
- triennial''' parliaments; a '''triennial reign
- (Howell)
Synonyms
* (rare) trieterical
Related terms
* (noun) triennium
See also
* triennially
Noun
(
en noun)
A third anniversary.
Related terms
* biennial
* triennium
* triannual
