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triannual

adjective
tri·annual | \ (ˈ)trī+ \

Definition of triannual 

1 obsolete : triennial

2 : made, appearing, or occurring three times a year a triannual estimate of value a triannual advertisement

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History and Etymology for triannual

tri- + annual

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Dictionary Entries near triannual

triangulator

Triangulum

Triangulum Australe

triannual

triannulate

trianon

triapsal

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biannual

occurring twice a year or every two years

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