- vigentennial
- I. \\|vījen.|tenēəl\ adjective
Etymology: Latin vigeni, viceni twenty each + English -tennial (as in centennial) — more at vicenary: occurring once every 20 years : relating to a 20th anniversaryII. noun (-s): a 20th anniversary or its celebration
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/vuy'jen ten"ee euhl/, n.1. a 20th anniversary.2. a celebration, meeting, reunion, etc., commemorating such an anniversary.
Useful english dictionary. 2012.