Definition of quadrennially in US English:

quadrennially

adverb

  • See quadrennial

    • ‘It was coordinated quadrennially with competitions in Varna, Moscow, and Helsinki.’
    • ‘The first four documents are updated quadrennially, with the fifth being updated biennially.’

Pronunciation

quadrennially

/kwäˈdrenēəlē//kwɑˈdrɛniəli/