quinquennial
quinquennial (kwin-KWEN-ee-uhl) - adj., occurring every five years; of, pertaining to, or lasting five years. n., a fifth anniversary.
If it involves five years, either an interval or a period, it can be described by this word. Adopted in the mid-15th century from Latin quīnquennis, of five years.
If it involves five years, either an interval or a period, it can be described by this word. Adopted in the mid-15th century from Latin quīnquennis, of five years.