quinquennial
Kelime Anlamı :

1. beş yıllık.
2. beş yıl süren.
3. beş yılda bir olan.
4. beş senede bir.
5. beş sene süren.
6. beş sene süren veya beş senede bir olan şey.
7. beş yılda bir.
Tanımlar :
1. happening once every five years.
2. lasting for five years.
3. A fifth anniversary.
4. A period of five years.
from The American Heritage® Dictionary of the English Language, 4th Edition
1. that happens every five years
2. that lasts for five years
3. a fifth anniversary
4. a five year period
from Wiktionary, Creative Commons Attribution/Share-Alike License
1. occurring once in five years, or at the end of every five years; also, lasting five years. A quinquennial event.
from the GNU version of the Collaborative International Dictionary of English