Triennial in spanish
Trienal
pronunciation: tɹ̩ienɑl part of speech: adjective, noun
pronunciation: tɹ̩ienɑl part of speech: adjective, noun
In gestures
triennial = trienio.
Example: BNB has two four-monthly cumulations per annum, which are superseded by an annual volume, and then triennial cumulations.