triannual

[ trahy-an-yoo-uh l ]
/ traɪˈæn yu əl /

adjective

done, occurring, issued, etc., three times a year.
triennial.

noun

a triannual publication, contest, etc.
triennial.

Origin of triannual

First recorded in 1630–40; tri- + annual

OTHER WORDS FROM triannual

tri·an·nu·al·ly, adverb

Words nearby triannual

triangulate, triangulation, triangulation station, triangulum, triangulum australe, triannual, trianta, triapsidal, triarchy, triaryl, triarylmethane dye