triennial

(tri-en-ni-al) 4 syllables

Definition

adjective. occurring every third year or lasting 3 years;
noun. the 3rdh anniversary or the celebration of it

They had a family reunion on a triennial basis.

third; every 3 years; taking place every 3rd year

triennial

Share with your friends:

[try-EN-ee-ul]

Watch & Say

Watch the mouth

Pronunciation Speed